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  • Texas Standards
  • Science: 7th Grade

Texas - Science: 7th Grade

Essential Knowledge and Skills | Adopted: 2017

This correlation lists the recommended Gizmos for this state's curriculum standards. Click any Gizmo title below for more information.

1: : Scientific investigation and reasoning. The student, for at least 40% of the instructional time, conducts laboratory and field investigations following safety procedures and environmentally appropriate and ethical practices.


1.A: : The student is expected to: demonstrate safe practices during laboratory and field investigations as outlined in Texas Education Agency-approved safety standards; and

Screenshot of Hearing: Frequency and Volume

Hearing: Frequency and Volume

Test your hearing range by listening to low-, medium-, and high-frequency sounds. Compare the relative loudness of sounds at each frequency to create an equal-loudness curve. In a quiet room, measure your threshold of audibility for each frequency, and compare your results to others. The volume of each sound can be adjusted. 5 Minute Preview


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2: : Scientific investigation and reasoning. The student uses scientific practices during laboratory and field investigations.


2.A: : The student is expected to: plan and implement comparative and descriptive investigations by making observations, asking well defined questions, and using appropriate equipment and technology;

Screenshot of Effect of Environment on New Life Form

Effect of Environment on New Life Form

Using the scientific method, control the environmental conditions for a fictional alien organism in order to learn how the organism responds to changes in conditions. Sunlight, water, and temperature can be varied to determine their effects on the shape of the aliens. 5 Minute Preview


Lesson Info
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Screenshot of Hearing: Frequency and Volume

Hearing: Frequency and Volume

Test your hearing range by listening to low-, medium-, and high-frequency sounds. Compare the relative loudness of sounds at each frequency to create an equal-loudness curve. In a quiet room, measure your threshold of audibility for each frequency, and compare your results to others. The volume of each sound can be adjusted. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Pendulum Clock

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


Lesson Info
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Screenshot of Programmable Rover

Programmable Rover

In this introduction to coding, program a rover to explore the surface of Mars. Start by using tiles to create simple programs involving moving forward or backward, turns, jumps, loops, and picking up rock samples. Then use text instructions to optimize your code. Use your skills to program the rover to complete six challenging missions on Mars. 5 Minute Preview


Lesson Info
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Screenshot of Real-Time Histogram

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


Lesson Info
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Screenshot of Sight vs. Sound Reactions

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


Lesson Info
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Screenshot of Time Estimation

Time Estimation

Try to estimate the passage of time by selecting a time interval, clicking the Start button, and clicking Stop when you think the interval has passed. The estimate and percent error are recorded. Compare different techniques for estimating time, as well as the average error for long time intervals versus shorter intervals. 5 Minute Preview


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2.B: : The student is expected to: design and implement experimental investigations by making observations, asking well defined questions, formulating testable hypotheses, and using appropriate equipment and technology;

Screenshot of Coral Reefs 2 - Biotic Factors

Coral Reefs 2 - Biotic Factors

In this followup to the Coral Reefs 1 - Abiotic Factors activity, investigate the impacts of fishing, disease, and invasive species on a model Caribbean coral reef. Many variables can be manipulated, included intensity of fishing, presence of black band and white band disease, and the presence of actual and potential invasive species. Click "Advance year" to see the impacts of these biotic changes. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Effect of Environment on New Life Form

Effect of Environment on New Life Form

Using the scientific method, control the environmental conditions for a fictional alien organism in order to learn how the organism responds to changes in conditions. Sunlight, water, and temperature can be varied to determine their effects on the shape of the aliens. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Growing Plants

Growing Plants

Investigate the growth of three common garden plants: tomatoes, beans, and turnips. You can change the amount of light each plant gets, the amount of water added each day, and the type of soil the seed is planted in. Observe the effect of each variable on plant height, plant mass, leaf color and leaf size. Determine what conditions produce the tallest and healthiest plants. Height and mass data are displayed on tables and graphs. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Hearing: Frequency and Volume

Hearing: Frequency and Volume

Test your hearing range by listening to low-, medium-, and high-frequency sounds. Compare the relative loudness of sounds at each frequency to create an equal-loudness curve. In a quiet room, measure your threshold of audibility for each frequency, and compare your results to others. The volume of each sound can be adjusted. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Pendulum Clock

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


Lesson Info
Launch Gizmo
Screenshot of Programmable Rover

Programmable Rover

In this introduction to coding, program a rover to explore the surface of Mars. Start by using tiles to create simple programs involving moving forward or backward, turns, jumps, loops, and picking up rock samples. Then use text instructions to optimize your code. Use your skills to program the rover to complete six challenging missions on Mars. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Real-Time Histogram

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


Lesson Info
Launch Gizmo
Screenshot of Seed Germination

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


Lesson Info
Launch Gizmo
Screenshot of Sight vs. Sound Reactions

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


Lesson Info
Launch Gizmo
Screenshot of Temperature and Sex Determination - Metric

Temperature and Sex Determination - Metric

Observe the sex ratios of birds and geckos as they hatch in an incubator. Vary the temperature of the incubator and measure the percentages of male and female hatchlings to determine if temperature has an effect on sex. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Time Estimation

Time Estimation

Try to estimate the passage of time by selecting a time interval, clicking the Start button, and clicking Stop when you think the interval has passed. The estimate and percent error are recorded. Compare different techniques for estimating time, as well as the average error for long time intervals versus shorter intervals. 5 Minute Preview


Lesson Info
Launch Gizmo

2.D: : The student is expected to: construct tables and graphs, using repeated trials and means, to organize data and identify patterns; and

Screenshot of Seed Germination

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


Lesson Info
Launch Gizmo
Screenshot of Temperature and Sex Determination - Metric

Temperature and Sex Determination - Metric

Observe the sex ratios of birds and geckos as they hatch in an incubator. Vary the temperature of the incubator and measure the percentages of male and female hatchlings to determine if temperature has an effect on sex. 5 Minute Preview


Lesson Info
Launch Gizmo

3: : Scientific investigation and reasoning. The student uses critical thinking, scientific reasoning, and problem solving to make informed decisions and knows the contributions of relevant scientists.


3.B: : The student is expected to: use models to represent aspects of the natural world such as human body systems and plant and animal cells;

Screenshot of Cell Structure

Cell Structure

Select a sample cell from an animal, plant, or bacterium and view the cell under a microscope. Select each organelle on the image to learn more about its structure and function. Closeup views and animations of certain organelles is provided. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Cell Types

Cell Types

Explore a wide variety of cells, from bacteria to human neurons, using a compound light microscope. Select a sample to study, then focus on the sample using the coarse and fine focus controls of the microscope. Compare the structures found in different cells, then perform tests to see if the sample is alive. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Digestive System

Digestive System

Digestion is a complex process, involving a wide variety of organs and chemicals that work together to break down food, absorb nutrients, and eliminate wastes. But have you ever wondered what would happen if some of those organs were eliminated, or if the sequence was changed? Can the digestive system be improved? Find out by designing your own digestive system with the Digestive System Gizmo. 5 Minute Preview


Lesson Info
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4: : Science investigation and reasoning. The student knows how to use a variety of tools and safety equipment to conduct science inquiry.


4.A: : The student is expected to: use appropriate tools, including life science models, hand lenses, stereoscopes, microscopes, beakers, Petri dishes, microscope slides, graduated cylinders, test tubes, meter sticks, metric rulers, metric tape measures, timing devices, hot plates, balances, thermometers, calculators, water test kits, computers, temperature and pH probes, collecting nets, insect traps, globes, digital cameras, journals/notebooks, and other necessary equipment to collect, record, and analyze information; and

Screenshot of Triple Beam Balance

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


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5: : Matter and energy. The student knows that interactions occur between matter and energy.


5.A: : The student is expected to: recognize that radiant energy from the Sun is transformed into chemical energy through the process of photosynthesis; and

Screenshot of Cell Energy Cycle

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


Lesson Info
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Screenshot of Photosynthesis Lab

Photosynthesis Lab

Study photosynthesis in a variety of conditions. Oxygen production is used to measure the rate of photosynthesis. Light intensity, carbon dioxide levels, temperature, and wavelength of light can all be varied. Determine which conditions are ideal for photosynthesis, and understand how limiting factors affect oxygen production. 5 Minute Preview


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5.B: : The student is expected to: diagram the flow of energy through living systems, including food chains, food webs, and energy pyramids.

Screenshot of Food Chain

Food Chain

In this ecosystem consisting of hawks, snakes, rabbits and grass, the population of each species can be studied as part of a food chain. Disease can be introduced for any species, and the number of animals can be increased or decreased at any time, just like in the real world. 5 Minute Preview


Lesson Info
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Screenshot of Forest Ecosystem

Forest Ecosystem

Observe and manipulate the populations of four creatures (trees, deer, bears, and mushrooms) in a forest. Investigate the feeding relationships (food web) in the forest. Determine which creatures are producers, consumers, and decomposers. Pictographs and line graphs show changes in populations over time. 5 Minute Preview


Lesson Info
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Screenshot of Prairie Ecosystem

Prairie Ecosystem

Observe the populations of grass, prairie dogs, ferrets and foxes in a prairie ecosystem. Investigate feeding relationships and determine the food chain. Bar graphs and line graphs show changes in populations over time. 5 Minute Preview


Lesson Info
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6: : Matter and energy. The student knows that matter has physical and chemical properties and can undergo physical and chemical changes.


6.A: : The student is expected to: distinguish between physical and chemical changes in matter.

Screenshot of Chemical Changes

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


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8: : Earth and space. The student knows that natural events and human activity can impact Earth systems.


8.B: : The student is expected to: analyze the effects of weathering, erosion, and deposition on the environment in ecoregions of Texas; and

Screenshot of Weathering

Weathering

Weathering is the breakdown of rock at Earth's surface through physical or chemical means. Students will learn about the different types of mechanical and chemical weathering, then use a simulation to model the effects of weathering on different types of rocks in varying climate conditions. 5 Minute Preview


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10: : Organisms and environments. The student knows that there is a relationship between organisms and the environment.


10.A: : The student is expected to: observe and describe how different environments, including microhabitats in schoolyards and biomes, support different varieties of organisms;

Screenshot of Coral Reefs 2 - Biotic Factors

Coral Reefs 2 - Biotic Factors

In this followup to the Coral Reefs 1 - Abiotic Factors activity, investigate the impacts of fishing, disease, and invasive species on a model Caribbean coral reef. Many variables can be manipulated, included intensity of fishing, presence of black band and white band disease, and the presence of actual and potential invasive species. Click "Advance year" to see the impacts of these biotic changes. 5 Minute Preview


Lesson Info
Launch Gizmo

10.B: : The student is expected to: describe how biodiversity contributes to the sustainability of an ecosystem; and

Screenshot of Coral Reefs 1 - Abiotic Factors

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


Lesson Info
Launch Gizmo
Screenshot of Coral Reefs 2 - Biotic Factors

Coral Reefs 2 - Biotic Factors

In this followup to the Coral Reefs 1 - Abiotic Factors activity, investigate the impacts of fishing, disease, and invasive species on a model Caribbean coral reef. Many variables can be manipulated, included intensity of fishing, presence of black band and white band disease, and the presence of actual and potential invasive species. Click "Advance year" to see the impacts of these biotic changes. 5 Minute Preview


Lesson Info
Launch Gizmo

11: : Organisms and environments. The student knows that populations and species demonstrate variation and inherit many of their unique traits through gradual processes over many generations.


11.A: : The student is expected to: examine organisms or their structures such as insects or leaves and use dichotomous keys for identification;

Screenshot of Dichotomous Keys

Dichotomous Keys

Use dichotomous keys to identify and classify five types of organisms: California albatrosses, Canadian Rockies buttercups, Texas venomous snakes, Virginia evergreens, and Florida cartilagenous fishes. After you have classified every organism, try making your own dichotomous key! 5 Minute Preview


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11.C: : The student is expected to: identify some changes in genetic traits that have occurred over several generations through natural selection and selective breeding such as the Galapagos Medium Ground Finch (Geospiza fortis) or domestic animals and hybrid plants.

Screenshot of Evolution: Mutation and Selection

Evolution: Mutation and Selection

Observe evolution in a fictional population of bugs. Set the background to any color, and see natural selection taking place. Inheritance of color occurs according to Mendel's laws and probability. Mutations occur at random, and probability of capture by predators is determined by the insect's camouflage. 5 Minute Preview


Lesson Info
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Screenshot of Evolution: Natural and Artificial Selection

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


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Screenshot of Rainfall and Bird Beaks - Metric

Rainfall and Bird Beaks - Metric

Study the thickness of birds' beaks over a five year period as you control the yearly rainfall on an isolated island. As the environmental conditions change, the species must adapt (a real-world consequence) to avoid extinction. 5 Minute Preview


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12: : Organisms and environments. The student knows that living systems at all levels of organization demonstrate the complementary nature of structure and function.


12.A: : The student is expected to: investigate and explain how internal structures of organisms have adaptations that allow specific functions such as gills in fish, hollow bones in birds, or xylem in plants;

Screenshot of Evolution: Mutation and Selection

Evolution: Mutation and Selection

Observe evolution in a fictional population of bugs. Set the background to any color, and see natural selection taking place. Inheritance of color occurs according to Mendel's laws and probability. Mutations occur at random, and probability of capture by predators is determined by the insect's camouflage. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Evolution: Natural and Artificial Selection

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


Lesson Info
Launch Gizmo

12.B: : The student is expected to: identify the main functions of the systems of the human organism, including the circulatory, respiratory, skeletal, muscular, digestive, excretory, reproductive, integumentary, nervous, and endocrine systems;

Screenshot of Circulatory System

Circulatory System

Trace the path of blood through a beating heart and the network of blood vessels that supplies blood to the body. Take blood samples from different blood vessels to observe blood cells and measure the levels of oxygen, carbon dioxide, sugar, and urea. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Digestive System

Digestive System

Digestion is a complex process, involving a wide variety of organs and chemicals that work together to break down food, absorb nutrients, and eliminate wastes. But have you ever wondered what would happen if some of those organs were eliminated, or if the sequence was changed? Can the digestive system be improved? Find out by designing your own digestive system with the Digestive System Gizmo. 5 Minute Preview


Lesson Info
Launch Gizmo

12.C: : The student is expected to: recognize levels of organization in plants and animals, including cells, tissues, organs, organ systems, and organisms;

Screenshot of Circulatory System

Circulatory System

Trace the path of blood through a beating heart and the network of blood vessels that supplies blood to the body. Take blood samples from different blood vessels to observe blood cells and measure the levels of oxygen, carbon dioxide, sugar, and urea. 5 Minute Preview


Lesson Info
Launch Gizmo

12.D: : The student is expected to: differentiate between structure and function in plant and animal cell organelles, including cell membrane, cell wall, nucleus, cytoplasm, mitochondrion, chloroplast, and vacuole;

Screenshot of Cell Structure

Cell Structure

Select a sample cell from an animal, plant, or bacterium and view the cell under a microscope. Select each organelle on the image to learn more about its structure and function. Closeup views and animations of certain organelles is provided. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of Cell Types

Cell Types

Explore a wide variety of cells, from bacteria to human neurons, using a compound light microscope. Select a sample to study, then focus on the sample using the coarse and fine focus controls of the microscope. Compare the structures found in different cells, then perform tests to see if the sample is alive. 5 Minute Preview


Lesson Info
Launch Gizmo
Screenshot of RNA and Protein Synthesis

RNA and Protein Synthesis

Go through the process of synthesizing proteins through RNA transcription and translation. Learn about the many steps involved in protein synthesis including: unzipping of DNA, formation of mRNA, attaching of mRNA to the ribosome, and linking of amino acids to form a protein. 5 Minute Preview


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12.F: : The student is expected to: recognize the components of cell theory.

Screenshot of Paramecium Homeostasis

Paramecium Homeostasis

Observe how a paramecium maintains stable internal conditions in a changing aquatic environment. Water moves into the organism by osmosis, and is pumped out by the contractile vacuole. The concentration of solutes in the water will determine the rate of contractions in the paramecium. 5 Minute Preview


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14: : Organisms and environments. The student knows that reproduction is a characteristic of living organisms and that the instructions for traits are governed in the genetic material.


14.A: : The student is expected to: define heredity as the passage of genetic instructions from one generation to the next generation;

Screenshot of Fast Plants<sup>®</sup> 2 - Mystery Parent

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


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Screenshot of Inheritance

Inheritance

Create aliens with different traits and breed them to produce offspring. Determine which traits are passed down from parents to offspring and which traits are acquired. Offspring can be stored for future experiments or released. 5 Minute Preview


Lesson Info
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Screenshot of Mouse Genetics (One Trait)

Mouse Genetics (One Trait)

Breed "pure" mice with known genotypes that exhibit specific fur colors, and learn how traits are passed on via dominant and recessive genes. Mice can be stored in cages for future breeding, and the statistics of fur color are reported every time a pair of mice breed. Punnett squares can be used to predict results. 5 Minute Preview


Lesson Info
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Screenshot of Mouse Genetics (Two Traits)

Mouse Genetics (Two Traits)

Breed "pure" mice with known genotypes that exhibit specific fur and eye colors, and learn how traits are passed on via dominant and recessive genes. Mice can be stored in cages for future breeding, and the statistics of fur and eye color are reported every time a pair of mice breed. Punnett squares can be used to predict results. 5 Minute Preview


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14.B: : The student is expected to: compare the results of uniform or diverse offspring from asexual or sexual reproduction; and

Screenshot of Inheritance

Inheritance

Create aliens with different traits and breed them to produce offspring. Determine which traits are passed down from parents to offspring and which traits are acquired. Offspring can be stored for future experiments or released. 5 Minute Preview


Lesson Info
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14.C: : The student is expected to: recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus.

Screenshot of Human Karyotyping

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


Lesson Info
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Correlation last revised: 9/16/2020

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