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- Science: Science 24
Alberta - Science: Science 24
Program of Studies | Adopted: 2007
A: : Applications of Matter and Chemical Change (Science and Technology Emphasis)
A.1: : Science, Technology and Society (STS) and Knowledge
A.1.2: : Investigate and classify chemical reactions
A.1.2.A: : name simple compounds from chemical formulas, and recognize the chemical names of substances that are used every day
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
A.1.2.B: : infer the relationship among chemical formulas, composition and name (e.g., simple acids, bases, salts)
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
A.1.2.C: : investigate evidence of chemical change; i.e., change of phase, appearance, colour, odour, energy (e.g., heat, light)
Chemical Changes
Chemical changes result in the formation of new substances. But how can you tell if a chemical change has occurred? Explore this question by observing and measuring a variety of chemical reactions. Along the way you will learn about chemical equations, acids and bases, exothermic and endothermic reactions, and conservation of matter. 5 Minute Preview
A.1.2.D: : investigate, describe and compare the changes to reactants and products in fossil fuel combustion and rusting reactions
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
A.1.2.E: : define, operationally, endothermic and exothermic reactions (e.g., mixing chemicals in a "cold pack," burning natural gas)
Chemical Changes
Chemical changes result in the formation of new substances. But how can you tell if a chemical change has occurred? Explore this question by observing and measuring a variety of chemical reactions. Along the way you will learn about chemical equations, acids and bases, exothermic and endothermic reactions, and conservation of matter. 5 Minute Preview
A.1.2.F: : investigate and describe simple composition and decomposition reactions (e.g., tarnishing of silver, electrolysis of water)
Balancing Chemical Equations
Balance and classify five types of chemical reactions: synthesis, decomposition, single replacement, double replacement, and combustion. While balancing the reactions, the number of atoms on each side is presented as visual, histogram, and numerical data. 5 Minute Preview
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
A.1.2.G: : describe, using observation, the chemical properties of reactants and products in chemical reactions (e.g., neutralization, combustion, simple composition, decomposition)
Dehydration Synthesis
Build a glucose molecule, atom-by-atom, to learn about chemical bonds and the structure of glucose. Explore the processes of dehydration synthesis and hydrolysis in carbohydrate molecules. 5 Minute Preview
Equilibrium and Concentration
Observe how reactants and products interact in reversible reactions. The initial amount of each substance can be manipulated, as well as the pressure on the chamber. The amounts, concentrations, and partial pressures of each reactant and product can be tracked over time as the reaction proceeds toward equilibrium. 5 Minute Preview
A.1.2.H: : identify simple composition, decomposition, combustion and neutralization reactions when given word and/or chemical equations, products and reactants
Balancing Chemical Equations
Balance and classify five types of chemical reactions: synthesis, decomposition, single replacement, double replacement, and combustion. While balancing the reactions, the number of atoms on each side is presented as visual, histogram, and numerical data. 5 Minute Preview
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
A.1.3: : Explain the law of conservation of mass when balancing chemical reactions
A.1.3.A: : relate the concept of the atom to the conservation of mass; i.e., the number of atoms stays the same as they are rearranged in a chemical reaction; therefore, the total mass before and after the reaction remains the same (e.g., analyze the chemical equation 2Mg(s) + O2(g)?¨ 2MgO(s) to illustrate the law of conservation of mass by counting the number of atoms of each element)
Chemical Changes
Chemical changes result in the formation of new substances. But how can you tell if a chemical change has occurred? Explore this question by observing and measuring a variety of chemical reactions. Along the way you will learn about chemical equations, acids and bases, exothermic and endothermic reactions, and conservation of matter. 5 Minute Preview
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
A.1.3.B: : represent simple chemical reactions (e.g., neutralization, combustion, simple composition, decomposition) using word and/or balanced chemical equations
Balancing Chemical Equations
Balance and classify five types of chemical reactions: synthesis, decomposition, single replacement, double replacement, and combustion. While balancing the reactions, the number of atoms on each side is presented as visual, histogram, and numerical data. 5 Minute Preview
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
Dehydration Synthesis
Build a glucose molecule, atom-by-atom, to learn about chemical bonds and the structure of glucose. Explore the processes of dehydration synthesis and hydrolysis in carbohydrate molecules. 5 Minute Preview
A.1.3.C: : design an experiment to illustrate that mass cannot be created or destroyed in a chemical reaction
Chemical Changes
Chemical changes result in the formation of new substances. But how can you tell if a chemical change has occurred? Explore this question by observing and measuring a variety of chemical reactions. Along the way you will learn about chemical equations, acids and bases, exothermic and endothermic reactions, and conservation of matter. 5 Minute Preview
Chemical Equations
Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass. 5 Minute Preview
A.1.4: : Analyze common technological products and processes encountered in everyday life and careers, and analyze their potential effects on the environment
A.1.4.A: : analyze and explain common acid-base neutralization reactions (e.g., neutralization of stomach acid by antacids, use of baking soda or baking powder, use of lemon juice on fish dishes)
Titration
Measure the quantity of a known solution needed to neutralize an acid or base of unknown concentration. Use this information to calculate the unknown concentration. A variety of indicators can be used to show the pH of the solution. 5 Minute Preview
A.1.4.D: : investigate and describe greenhouse gases and air pollution resulting from combustion reactions (e.g., carbon dioxide and carbon monoxide released when methane is burned in a household furnace, sulfur dioxide and nitrogen dioxide released in car exhaust)
Greenhouse Effect - Metric
Within this simulated region of land, daytime's rising temperature and the falling temperature at night can be measured, along with heat flow in and out of the system. The amount of greenhouse gases present in the atmosphere can be adjusted through time, and the long-term effects can be investigated. 5 Minute Preview
A.2: : Skill Outcomes (focus on problem solving)
A.2.1: : Initiating and Planning
A.2.1.A: : Ask questions about relationships between and among observable variables, and plan investigations to address those questions
A.2.1.A.1: : identify questions to investigate that arise from practical problems and issues (e.g., "What environmental factors affect rusting the most?")
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Sight vs. Sound Reactions
Measure your reaction time by clicking your mouse as quickly as possible when visual or auditory stimuli are presented. The individual response times are recorded, as well as the mean and standard deviation for each test. A histogram of data shows overall trends in sight and sound response times. The type of test as well as the symbols and sounds used are chosen by the user. 5 Minute Preview
A.2.2: : Performing and Recording
A.2.2.A: : Conduct investigations into the relationships between and among observations, and gather and record qualitative and quantitative data
A.2.2.A.1: : carry out procedures, controlling the major variables, and adapt or extend those procedures where required (e.g., investigate chemical reactions for evidence of chemical change)
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Real-Time Histogram
Try to click your mouse once every 2 seconds. The time interval between each click is recorded, as well as the error and percent error. Data can be displayed in a table, histogram, or scatter plot. Observe and measure the characteristics of the resulting distribution when large amounts of data are collected. 5 Minute Preview
A.2.2.A.5: : construct and test a prototype of a device or system, and troubleshoot problems as they arise
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
A.2.3: : Analyzing and Interpreting
A.2.3.A: : Analyze qualitative and quantitative data, and develop and assess possible explanations
A.2.3.A.1: : compile and display evidence and information, by hand or computer, in a variety of formats, including diagrams, flow charts, tables, graphs and scatterplots (e.g., report findings of investigations of chemical change)
Earthquakes 1 - Recording Station
Using an earthquake recording station, learn how to determine the distance between the station and an earthquake based on the time difference between the arrival of the primary and secondary seismic waves. Use this data to find the epicenter in the Earthquakes 2 - Location of Epicenter Gizmo. 5 Minute Preview
A.2.3.A.3: : state a conclusion, based on experimental data, and explain how evidence gathered supports or refutes an initial idea (e.g., report on the results of an investigation into the effectiveness of antacid tablets)
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
A.2.3.A.6: : identify and evaluate potential applications of findings (e.g., identify ways to control corrosion of oil pipelines and equipment used in pulp and paper mills)
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
A.2.4: : Communication and Teamwork
A.2.4.A: : Work collaboratively on problems; and use appropriate language and formats to communicate ideas, procedures and results
A.2.4.A.4: : evaluate individual and group processes used in planning, problem solving, decision making and completing a task (e.g., assess processes used to construct a device that reduces CO emissions)
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
A.3: : Attitude Outcomes
A.3.5: : Stewardship
A.3.5.A: : Demonstrate sensitivity and responsibility in pursuing a balance between the needs of humans and a sustainable environment (e.g., walk rather than drive to neighbourhood stores to reduce emissions of greenhouse gases; assume part of the collective responsibility for the impact of humans on the environment)
Coral Reefs 1 - Abiotic Factors
Explore the abiotic factors that affect Caribbean coral reefs. Many factors can be manipulated in this simplified reef model, including ocean temperature and pH, storm severity, and input of excess sediments and nutrients from logging, sewage, and agriculture. Click "Advance year" to see how the reef responds to these changes. 5 Minute Preview
B: : Understanding Common Energy Conversion Systems (Science and Technology Emphasis)
B.1: : Science, Technology and Society (STS) and Knowledge
B.1.1: : Investigate and interpret transformation and conservation of various forms of energy in physical and technological systems
B.1.1.A: : investigate and describe evidence of energy transformations in the home and everyday contexts (e.g., simple machines, electrical devices, chemical reactions)
Energy Conversion in a System
A falling cylinder is attached to a rotating propeller that stirs and heats the water in a beaker. The mass and height of the cylinder, as well as the quantity and initial temperature of water can be adjusted. The temperature of the water is measured as energy is converted from one form to another. 5 Minute Preview
Inclined Plane - Sliding Objects
Investigate the energy and motion of a block sliding down an inclined plane, with or without friction. The ramp angle can be varied and a variety of materials for the block and ramp can be used. Potential and kinetic energy are reported as the block slides down the ramp. Two experiments can be run simultaneously to compare results as factors are varied. 5 Minute Preview
B.1.1.C: : describe an energy transformation system in terms of input, converter and output (e.g., an electric kettle)
Energy Conversion in a System
A falling cylinder is attached to a rotating propeller that stirs and heats the water in a beaker. The mass and height of the cylinder, as well as the quantity and initial temperature of water can be adjusted. The temperature of the water is measured as energy is converted from one form to another. 5 Minute Preview
B.1.1.D: : apply the law of conservation of energy to trace energy transformation, dissipation and availability in physical and technological systems (e.g., swinging pendulum)
Air Track
Adjust the mass and velocity of two gliders on a frictionless air track. Measure the velocity, momentum, and kinetic energy of each glider as they approach each other and collide. Collisions can be elastic or inelastic. 5 Minute Preview
Energy Conversion in a System
A falling cylinder is attached to a rotating propeller that stirs and heats the water in a beaker. The mass and height of the cylinder, as well as the quantity and initial temperature of water can be adjusted. The temperature of the water is measured as energy is converted from one form to another. 5 Minute Preview
Energy of a Pendulum
Perform experiments with a pendulum to gain an understanding of energy conservation in simple harmonic motion. The mass, length, and gravitational acceleration of the pendulum can be adjusted, as well as the initial angle. The potential energy, kinetic energy, and total energy of the oscillating pendulum can be displayed on a table, bar chart or graph. 5 Minute Preview
Inclined Plane - Sliding Objects
Investigate the energy and motion of a block sliding down an inclined plane, with or without friction. The ramp angle can be varied and a variety of materials for the block and ramp can be used. Potential and kinetic energy are reported as the block slides down the ramp. Two experiments can be run simultaneously to compare results as factors are varied. 5 Minute Preview
Roller Coaster Physics
Adjust the hills on a toy-car roller coaster and watch what happens as the car careens toward an egg (that can be broken) at the end of the track. The heights of three hills can be manipulated, along with the mass of the car and the friction of the track. A graph of various variables of motion can be viewed as the car travels, including position, speed, acceleration, potential energy, kinetic energy, and total energy. 5 Minute Preview
Trebuchet
Design your own trebuchet to fling a projectile at a castle wall. All of the dimensions of the trebuchet can be adjusted, as well as the masses of the counterweight and payload. Select a target on the Launch tab, or just see how far your projectile will go. 5 Minute Preview
B.1.2: : Investigate and analyze electrical energy conversion devices in terms of energy conversions, rate of energy transfer and efficiency
B.1.2.C: : describe the efficiency of an energy conversion system as a ratio of total input energy to useful output energy, and quantify efficiency as: % efficiency = useful output energy ÷ total input energy × 100
Pulley Lab
Use a pulley system to lift a heavy weight to a certain height. Measure the force required to lift the weight using up to three fixed and three movable pulleys. The weight to be lifted and the efficiency of the pulley system can be adjusted, and the height of the weight and the total input distance are reported. 5 Minute Preview
B.1.2.D: : explain why the useful output energy in machines is always less than the input energy
Pulley Lab
Use a pulley system to lift a heavy weight to a certain height. Measure the force required to lift the weight using up to three fixed and three movable pulleys. The weight to be lifted and the efficiency of the pulley system can be adjusted, and the height of the weight and the total input distance are reported. 5 Minute Preview
B.1.3: : Investigate and describe the energy conversions associated with change in chemical and biological systems
B.1.3.A: : investigate and describe common chemical reactions that produce or absorb energy (e.g., light and heat given off by the combustion of fossil fuels, cold and hot packs)
Chemical Changes
Chemical changes result in the formation of new substances. But how can you tell if a chemical change has occurred? Explore this question by observing and measuring a variety of chemical reactions. Along the way you will learn about chemical equations, acids and bases, exothermic and endothermic reactions, and conservation of matter. 5 Minute Preview
B.1.3.B: : list and explain the requirements of photosynthesis as carbon dioxide, water, chlorophyll in chloroplasts and sunlight; and list and explain the products as oxygen and glucose
Cell Energy Cycle
Explore the processes of photosynthesis and respiration that occur within plant and animal cells. The cyclical nature of the two processes can be constructed visually, and the simplified photosynthesis and respiration formulae can be balanced. 5 Minute Preview
Photosynthesis - High School
As a marine biologist students learn about photosynthesis to help scientists in Australia determine why the coral in the Great Barrier Reef is bleaching. Video Preview
B.1.3.C: : explain, in general, the process of respiration in which glucose and oxygen are converted to energy, carbon dioxide and water
Cell Energy Cycle
Explore the processes of photosynthesis and respiration that occur within plant and animal cells. The cyclical nature of the two processes can be constructed visually, and the simplified photosynthesis and respiration formulae can be balanced. 5 Minute Preview
B.1.3.G: : outline, in general terms, the formation of the following fossil fuels: oil, coal and natural gas
Carbon Cycle
Follow the path of a carbon atom through the atmosphere, biosphere, hydrosphere, and geosphere. Manipulate a simplified model to see how human activities and other factors affect the amount of atmospheric carbon today and in the future. 5 Minute Preview
B.2: : Skill Outcomes (focus on problem solving)
B.2.1: : Initiating and Planning
B.2.1.A: : Ask questions about relationships between and among observable variables, and plan investigations to address those questions
B.2.1.A.1: : identify questions to investigate that arise from practical problems and issues (e.g., "How can we measure the power of the human body?")
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Sight vs. Sound Reactions
Measure your reaction time by clicking your mouse as quickly as possible when visual or auditory stimuli are presented. The individual response times are recorded, as well as the mean and standard deviation for each test. A histogram of data shows overall trends in sight and sound response times. The type of test as well as the symbols and sounds used are chosen by the user. 5 Minute Preview
B.2.1.A.4: : evaluate and select appropriate instruments for problem solving, inquiry and decision making (e.g., decide how to measure the energy output of a device or process, and select the proper procedures and tools for the task)
Triple Beam Balance
Learn how to determine the mass of an object using a triple beam balance. The mass of a variety of objects can be determined using this simulated version of a common real-world laboratory tool for measurement. 5 Minute Preview
B.2.2: : Performing and Recording
B.2.2.A: : Conduct investigations into the relationships between and among observations, and gather and record qualitative and quantitative data
B.2.2.A.1: : carry out procedures, controlling the major variables and adapting or extending procedures where required (e.g., determine the amount of thermal energy released by cellular respiration; determine the energy outputs of various foods, using simple calorimetric methods)
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Real-Time Histogram
Try to click your mouse once every 2 seconds. The time interval between each click is recorded, as well as the error and percent error. Data can be displayed in a table, histogram, or scatter plot. Observe and measure the characteristics of the resulting distribution when large amounts of data are collected. 5 Minute Preview
B.2.2.A.5: : construct and test a prototype of a device or system, and troubleshoot problems as they arise (e.g., construct a device that uses solar or wind energy to generate electricity)
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
B.2.3: : Analyzing and Interpreting
B.2.3.A: : Analyze qualitative and quantitative data, and develop and assess possible explanations
B.2.3.A.1: : compile and display evidence and information, by hand or computer, in a variety of formats, including diagrams, flow charts, tables, graphs and scatterplots (e.g., report findings from an experiment to measure the power of the human body)
Earthquakes 1 - Recording Station
Using an earthquake recording station, learn how to determine the distance between the station and an earthquake based on the time difference between the arrival of the primary and secondary seismic waves. Use this data to find the epicenter in the Earthquakes 2 - Location of Epicenter Gizmo. 5 Minute Preview
B.2.3.A.2: : compare theoretical and empirical values, and account for discrepancies (e.g., explain the difference between the theoretical value of percent efficiency of a device and the measured efficiency in the laboratory)
Limiting Reactants
Explore the concepts of limiting reactants, excess reactants, and theoretical yield in a chemical reaction. Select one of two different reactions, choose the number of molecules of each reactant, and then observe the products created and the reactants left over. 5 Minute Preview
B.3: : Attitude Outcomes
B.3.5: : Stewardship
B.3.5.A: : Demonstrate sensitivity and responsibility in pursuing a balance between the needs of humans and a sustainable environment (e.g., list consequences of improving the efficiency of fossil fuel based technologies; participate in the social and political systems that influence environmental policy in their community)
Coral Reefs 1 - Abiotic Factors
Explore the abiotic factors that affect Caribbean coral reefs. Many factors can be manipulated in this simplified reef model, including ocean temperature and pH, storm severity, and input of excess sediments and nutrients from logging, sewage, and agriculture. Click "Advance year" to see how the reef responds to these changes. 5 Minute Preview
C: : Disease Defence and Human Health (Social and Environmental Emphasis)
C.1: : Science, Technology and Society (STS) and Knowledge
C.1.2: : Analyze the relationship between human health and environmental pathogens
C.1.2.B: : investigate and describe the conditions necessary for the growth of a specific pathogen (e.g., viruses, fungi, bacteria)
Virus Lytic Cycle
Release a lytic virus in a group of cells and observe how cells are infected over time and eventually destroyed. Data related to the number of healthy cells, infected cells, and viruses can be recorded over time to determine the time required for the virus to mature within a cell. 5 Minute Preview
C.1.4: : Describe the role of genes in inherited characteristics and human health
C.1.4.A: : describe the role of genes in inherited characteristics (e.g., hitchhiker's thumb; earlobe attachment; hair, skin and eye colour)
Evolution: Natural and Artificial Selection
Observe evolution in a fictional population of bugs. Set the background to any color, and see natural selection taking place. Compare the processes of natural and artificial selection. Manipulate the mutation rate, and determine how mutation rate affects adaptation and evolution. 5 Minute Preview
C.1.4.B: : interpret a Punnett square to illustrate dominant and recessive monohybrid autosomal crosses
Fast Plants® 2 - Mystery Parent
In this follow-up to Fast Plants® 1 - Growth and Genetics, continue to explore inheritance of traits in Wisconsin Fast Plants. Infer the genotype of a "mystery P2 parent" of a set of Fast Plants based on the traits of the P1, F1, and F2 plants. Then create designer Fast Plants by selectively breeding plants with desired traits. 5 Minute Preview
Hardy-Weinberg Equilibrium
Set the initial percentages of three types of parrots in a population and track changes in genotype and allele frequency through several generations. Analyze population data to develop an understanding of the Hardy-Weinberg equilibrium. Determine how initial allele percentages will affect the equilibrium state of the population. 5 Minute Preview
C.1.4.C: : identify the role of chromosomes in determining the sex of human offspring
Human Karyotyping
Sort and pair the images of human chromosomes obtained in a scan. Find differences in the scans of the various patients to find out specific things that can cause disease, as well as determining the sex of the person. 5 Minute Preview
C.1.4.E: : identify the relationships among DNA, genes and chromosomes; and identify, in general, the structure and replication of a DNA molecule
Human Karyotyping
Sort and pair the images of human chromosomes obtained in a scan. Find differences in the scans of the various patients to find out specific things that can cause disease, as well as determining the sex of the person. 5 Minute Preview
C.2: : Skill Outcomes (focus on the use of research and inquiry skills to inform the decision-making process)
C.2.1: : Initiating and Planning
C.2.1.A: : Ask questions about relationships between and among observable variables, and plan investigations to address those questions
C.2.1.A.1: : identify questions to investigate that arise from practical problems and issues (e.g., "How effective are commercially available antibacterial cleaners on bacteria found in the home or in school?")
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Sight vs. Sound Reactions
Measure your reaction time by clicking your mouse as quickly as possible when visual or auditory stimuli are presented. The individual response times are recorded, as well as the mean and standard deviation for each test. A histogram of data shows overall trends in sight and sound response times. The type of test as well as the symbols and sounds used are chosen by the user. 5 Minute Preview
C.2.2: : Performing and Recording
C.2.2.A: : Conduct investigations into the relationships between and among observations, and gather and record qualitative and quantitative data
C.2.2.A.2: : use instruments effectively and accurately for collecting data (e.g., observe prepared slides of various disease-causing microbial organisms or prepared slides of cellular components of human blood)
Triple Beam Balance
Learn how to determine the mass of an object using a triple beam balance. The mass of a variety of objects can be determined using this simulated version of a common real-world laboratory tool for measurement. 5 Minute Preview
C.2.3: : Analyzing and Interpreting
C.2.3.A: : Analyze qualitative and quantitative data, and develop and assess possible explanations
C.2.3.A.1: : compile and display evidence and information, by hand or computer, in a variety of formats, including diagrams, flow charts, tables, graphs and scatterplots (e.g., graph the incidence of a particular disease over time)
Earthquakes 1 - Recording Station
Using an earthquake recording station, learn how to determine the distance between the station and an earthquake based on the time difference between the arrival of the primary and secondary seismic waves. Use this data to find the epicenter in the Earthquakes 2 - Location of Epicenter Gizmo. 5 Minute Preview
C.2.3.A.5: : identify and evaluate potential applications of findings (e.g., assess factors that promote or discourage growth in bacteria populations; identify mutagens in the environment and trace their sources)
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
C.2.4: : Communication and Teamwork
C.2.4.A: : Work collaboratively on problems; and use appropriate language and formats to communicate ideas, procedures and results
C.2.4.A.6: : evaluate individual and group processes used in planning, problem solving, decision making and completing a task (e.g., assess processes used to determine if the introduction of human genes into other species, such as mice and bacteria, poses a risk to human health)
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
C.3: : Attitude Outcomes
C.3.5: : Stewardship
C.3.5.A: : Demonstrate sensitivity and responsibility in pursuing a balance between the needs of humans and a sustainable environment (e.g., share the responsibility for maintaining clean air and clean water)
Coral Reefs 1 - Abiotic Factors
Explore the abiotic factors that affect Caribbean coral reefs. Many factors can be manipulated in this simplified reef model, including ocean temperature and pH, storm severity, and input of excess sediments and nutrients from logging, sewage, and agriculture. Click "Advance year" to see how the reef responds to these changes. 5 Minute Preview
D: : Motion, Change and Transportation Safety (Nature of Science Emphasis)
D.1: : Science, Technology and Society (STS) and Knowledge
D.1.2: : Describe the change in position and speed of objects mathematically and graphically
D.1.2.A: : define speed (velocity) as change in position during a time interval, and quantify speed (velocity) using v = d/t (e.g., express speed [velocity] in metres per second [m/s])
Distance-Time Graphs - Metric
Create a graph of a runner's position versus time and watch the runner complete a 40-meter dash based on the graph you made. Notice the connection between the slope of the line and the speed of the runner. What will the runner do if the slope of the line is zero? What if the slope is negative? Add a second runner (a second graph) and connect real-world meaning to the intersection of two graphs. 5 Minute Preview
Distance-Time and Velocity-Time Graphs - Metric
Create a graph of a runner's position versus time and watch the runner run a 40-meter dash based on the graph you made. Notice the connection between the slope of the line and the velocity of the runner. Add a second runner (a second graph) and connect real-world meaning to the intersection of two graphs. Also experiment with a graph of velocity versus time for the runners, and also distance traveled versus time. 5 Minute Preview
Feed the Monkey (Projectile Motion)
Fire a banana cannon at a monkey in a tree. The monkey drops from the tree at the moment the banana is fired from the cannon. Determine where to aim the cannon so the monkey catches the banana. The position of the cannon, launch angle and initial velocity of the banana can be varied. Students can observe the velocity vectors and the paths of the monkey and banana. 5 Minute Preview
Golf Range
Try to get a hole in one by adjusting the velocity and launch angle of a golf ball. Explore the physics of projectile motion in a frictional or ideal setting. Horizontal and vertical velocity vectors can be displayed, as well as the path of the ball. The height of the golfer and the force of gravity are also adjustable. 5 Minute Preview
D.1.2.B: : plot a distance versus time graph, and use the slope of the graph to determine the speed (velocity) of an object
Distance-Time Graphs - Metric
Create a graph of a runner's position versus time and watch the runner complete a 40-meter dash based on the graph you made. Notice the connection between the slope of the line and the speed of the runner. What will the runner do if the slope of the line is zero? What if the slope is negative? Add a second runner (a second graph) and connect real-world meaning to the intersection of two graphs. 5 Minute Preview
Distance-Time and Velocity-Time Graphs - Metric
Create a graph of a runner's position versus time and watch the runner run a 40-meter dash based on the graph you made. Notice the connection between the slope of the line and the velocity of the runner. Add a second runner (a second graph) and connect real-world meaning to the intersection of two graphs. Also experiment with a graph of velocity versus time for the runners, and also distance traveled versus time. 5 Minute Preview
Free-Fall Laboratory
Investigate the motion of an object as it falls to the ground. A variety of objects can be compared, and their motion can be observed in a vacuum, in normal air, and in denser air. The position, velocity, and acceleration are measured over time, and the forces on the object can be displayed. Using the manual settings, the mass, radius, height, and initial velocity of the object can be adjusted, as can the air density and wind. 5 Minute Preview
D.1.2.C: : define distance travelled as a product of speed (velocity) and the time interval, and quantify the distance travelled using d = vt (e.g., express distance in metres [m])
Distance-Time and Velocity-Time Graphs - Metric
Create a graph of a runner's position versus time and watch the runner run a 40-meter dash based on the graph you made. Notice the connection between the slope of the line and the velocity of the runner. Add a second runner (a second graph) and connect real-world meaning to the intersection of two graphs. Also experiment with a graph of velocity versus time for the runners, and also distance traveled versus time. 5 Minute Preview
D.1.3: : Apply concepts of force, mass and the law of conservation of momentum to investigate one-dimensional collisions of two objects
D.1.3.B: : explain why it takes a large heavy object, such as a train, a great distance to come to a stop
2D Collisions
Investigate elastic collisions in two dimensions using two frictionless pucks. The mass, velocity, and initial position of each puck can be modified to create a variety of scenarios. 5 Minute Preview
Air Track
Adjust the mass and velocity of two gliders on a frictionless air track. Measure the velocity, momentum, and kinetic energy of each glider as they approach each other and collide. Collisions can be elastic or inelastic. 5 Minute Preview
D.1.3.C: : define impulse as a change in momentum, and calculate impulse as the product of force and the time interval over which it acts: m delta v = F delta t
2D Collisions
Investigate elastic collisions in two dimensions using two frictionless pucks. The mass, velocity, and initial position of each puck can be modified to create a variety of scenarios. 5 Minute Preview
Air Track
Adjust the mass and velocity of two gliders on a frictionless air track. Measure the velocity, momentum, and kinetic energy of each glider as they approach each other and collide. Collisions can be elastic or inelastic. 5 Minute Preview
D.1.3.E: : illustrate, quantitatively, the conservation of momentum as the following: the total momentum of two objects before a collision is the same as after the collision when friction is minimal and the two objects lock together
2D Collisions
Investigate elastic collisions in two dimensions using two frictionless pucks. The mass, velocity, and initial position of each puck can be modified to create a variety of scenarios. 5 Minute Preview
Air Track
Adjust the mass and velocity of two gliders on a frictionless air track. Measure the velocity, momentum, and kinetic energy of each glider as they approach each other and collide. Collisions can be elastic or inelastic. 5 Minute Preview
D.1.4: : Apply the principles underlying the motion of objects to explain the need for safety devices and practices
D.1.4.E: : describe the application of the law of conservation of momentum in a variety of situations involving two objects (e.g., rear-end collision, recoil, jumping from a boat, traffic accidents, two people on skates pushing each other)
2D Collisions
Investigate elastic collisions in two dimensions using two frictionless pucks. The mass, velocity, and initial position of each puck can be modified to create a variety of scenarios. 5 Minute Preview
Air Track
Adjust the mass and velocity of two gliders on a frictionless air track. Measure the velocity, momentum, and kinetic energy of each glider as they approach each other and collide. Collisions can be elastic or inelastic. 5 Minute Preview
Crumple Zones
Design a car to protect a test dummy in a collision. Adjust the length and stiffness of the crumple zone and the rigidity of the safety cell to determine how the car will deform during the crash. Add seat belts and/or airbags to prevent the dummy from hitting the steering wheel. Three different body types (sedan, SUV, and subcompact) are available and a wide range of crash speeds can be used. 5 Minute Preview
D.2: : Skill Outcomes (focus on scientific inquiry)
D.2.1: : Initiating and Planning
D.2.1.A: : Ask questions about relationships between and among observable variables, and plan investigations to address those questions
D.2.1.A.1: : identify questions that arise from practical problems and issues (e.g., "How long does it take to respond to an emergency?")
Sight vs. Sound Reactions
Measure your reaction time by clicking your mouse as quickly as possible when visual or auditory stimuli are presented. The individual response times are recorded, as well as the mean and standard deviation for each test. A histogram of data shows overall trends in sight and sound response times. The type of test as well as the symbols and sounds used are chosen by the user. 5 Minute Preview
D.2.1.A.2: : define and delimit problems to facilitate investigation (e.g., determine reaction time)
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
D.2.1.A.3: : design an experiment, identifying the manipulated, responding and fixed variables (e.g., investigate how air bags work, using a partially inflated beach ball or plastic bag and a steel ball or rock to model the functioning of the air bag)
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Real-Time Histogram
Try to click your mouse once every 2 seconds. The time interval between each click is recorded, as well as the error and percent error. Data can be displayed in a table, histogram, or scatter plot. Observe and measure the characteristics of the resulting distribution when large amounts of data are collected. 5 Minute Preview
D.2.2: : Performing and Recording
D.2.2.A: : Conduct investigations into the relationships between and among observations, and gather and record qualitative and quantitative data
D.2.2.A.1: : carry out procedures, controlling the major variables and adapting or extending procedures where required (e.g., test different materials for use as seat belts)
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Real-Time Histogram
Try to click your mouse once every 2 seconds. The time interval between each click is recorded, as well as the error and percent error. Data can be displayed in a table, histogram, or scatter plot. Observe and measure the characteristics of the resulting distribution when large amounts of data are collected. 5 Minute Preview
D.2.2.A.2: : use instruments effectively and accurately for collecting data (e.g., develop a questionnaire to elicit community opinions about wearing seat belts)
Triple Beam Balance
Learn how to determine the mass of an object using a triple beam balance. The mass of a variety of objects can be determined using this simulated version of a common real-world laboratory tool for measurement. 5 Minute Preview
D.2.2.A.3: : estimate quantities (e.g., estimate, predict, check and validate calculations)
Estimating Population Size
Adjust the number of fish in a lake to be tagged and the number of fish to be recaptured. Use the number of tagged fish in the catch to estimate the number of fish in the lake. 5 Minute Preview
D.2.2.A.4: : compile and organize data, using appropriate formats and data treatments to facilitate interpretation
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
D.2.3: : Analyzing and Interpreting
D.2.3.A: : Analyze qualitative and quantitative data, and develop and assess possible explanations
D.2.3.A.2: : compile and display evidence and information, by hand or computer, in a variety of formats, including diagrams, flow charts, tables, graphs and scatterplots (e.g., draw a force-time graph for cushioned and noncushioned toy cars, in an investigation of the effectiveness of different types of cushions for a toy car)
Earthquakes 1 - Recording Station
Using an earthquake recording station, learn how to determine the distance between the station and an earthquake based on the time difference between the arrival of the primary and secondary seismic waves. Use this data to find the epicenter in the Earthquakes 2 - Location of Epicenter Gizmo. 5 Minute Preview
D.2.3.A.4: : interpret patterns and trends in data, and infer or calculate linear or nonlinear relationships among variables (e.g., determine speed [velocity] from a distance-time graph, or distance from a speed [velocity]-time graph)
Distance-Time and Velocity-Time Graphs - Metric
Create a graph of a runner's position versus time and watch the runner run a 40-meter dash based on the graph you made. Notice the connection between the slope of the line and the velocity of the runner. Add a second runner (a second graph) and connect real-world meaning to the intersection of two graphs. Also experiment with a graph of velocity versus time for the runners, and also distance traveled versus time. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
D.2.3.A.5: : identify and apply criteria; i.e., social factors, explanations, methods, data, related research and relevance, including the presence of bias, for evaluating evidence and sources of information (e.g., identify and analyze a variety of factors that affect the authenticity of information derived from the mass media and electronic communication)
Diffusion
Explore the motion of particles as they bounce around from one side of a room to the other through an adjustable gap or partition. The mass of the particles can be adjusted, as well as the temperature of the room and the initial number of particles. In a real-world context, this can be used to learn about how odors travel, fluids move through gaps, the thermodynamics of gases, and statistical probability. 5 Minute Preview
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
Seed Germination
Perform experiments with several seed types to see what conditions yield the highest germination (sprouting) rate. Three different types of seeds can be studied, and the temperature, water and light in the germination chamber can be controlled. No two trials will have the same result so repeated trials are recommended. 5 Minute Preview
D.2.4: : Communication and Teamwork
D.2.4.A: : Work collaboratively on problems; and use appropriate language and formats to communicate ideas, procedures and results
D.2.4.A.3: : evaluate individual or group processes used in planning, problem solving, decision making and completing a task (e.g., assess group processes used to evaluate cars for their safety features)
Pendulum Clock
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity. 5 Minute Preview
D.3: : Attitude Outcomes
D.3.5: : Stewardship
D.3.5.A: : Demonstrate sensitivity and responsibility in pursuing a balance between the needs of humans and a sustainable environment
Coral Reefs 1 - Abiotic Factors
Explore the abiotic factors that affect Caribbean coral reefs. Many factors can be manipulated in this simplified reef model, including ocean temperature and pH, storm severity, and input of excess sediments and nutrients from logging, sewage, and agriculture. Click "Advance year" to see how the reef responds to these changes. 5 Minute Preview
Correlation last revised: 9/16/2020
About STEM Cases
Students assume the role of a scientist trying to solve a real world problem. They use scientific practices to collect and analyze data, and form and test a hypothesis as they solve the problems.
Each STEM Case uses realtime reporting to show live student results.
Introduction to the Heatmap
STEM Cases take between 30-90 minutes for students to complete, depending on the case.
Student progress is automatically saved so that STEM Cases can be completed over multiple sessions.
Multiple grade-appropriate versions, or levels, exist for each STEM Case.
Each STEM Case level has an associated Handbook. These are interactive guides that focus on the science concepts underlying the case.
How Free Gizmos Work
Start teaching with 20-40 Free Gizmos. See the full list.
Access lesson materials for Free Gizmos including teacher guides, lesson plans, and more.
All other Gizmos are limited to a 5 Minute Preview and can only be used for 5 minutes a day.
Free Gizmos change each semester. The new collection will be available January 1 and July 1.
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