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- Science: 3rd Grade
Minnesota - Science: 3rd Grade
Academic Standards | Adopted: 2019
1: : Exploring phenomena or engineering problems
1.1: : Asking questions and defining problems
1.1.1: : Students will be able to ask questions about aspects of the phenomena they observe, the conclusions they draw from their models or scientific investigations, each other’s ideas, and the information they read.
1.1.1.1: : Physical Science
3P.1.1.1.1: : Ask questions based on observations about why objects in darkness can be seen only when illuminated.
Eyes and Vision 1 - Seeing Color
Observe how different colors of light are reflected or absorbed by colored objects. Determine that white light is a combination of different colors of light, and that one or more component colors may be reflected when white light is shone on an object. Understand that we see an object when light reflected from the object enters our eye. 5 Minute Preview
Eyes and Vision 2 - Focusing Light
Once light enters the eye, it must be focused on the retina. Manipulate the pupil diameter to regulate the amount of light that enters then eye, then change the lens shape to focus light. Determine the changes in lens shape needed to maintain focus as the object distance changes. This is a followup to the Eyes and Vision 1 - Seeing Colors lesson. 5 Minute Preview
Eyes and Vision 3 - Sensing Light
Observe how photoreceptors on the retina are stimulated by different colors of light. Determine that cone cells are stimulated by specific colors of light and enable us to see color, while rod cells are stimulated by various colors and do not contribute to color vision. Experiment by varying the percentage of rod and cone cells in normal and dim light to see how rod cells help with night vision. 5 Minute Preview
1.2: : Planning and carrying out investigations
1.2.1: : Students will be able to design and conduct investigations in the classroom, laboratory, and/or field to test students’ ideas and questions, and will organize and collect data to provide evidence to support claims the students make about phenomena.
1.2.1.1: : Physical Science
3P.1.2.1.1: : Plan and conduct a controlled investigation to determine the effect of placing objects made with different materials in the path of a beam of light.
Eyes and Vision 1 - Seeing Color
Observe how different colors of light are reflected or absorbed by colored objects. Determine that white light is a combination of different colors of light, and that one or more component colors may be reflected when white light is shone on an object. Understand that we see an object when light reflected from the object enters our eye. 5 Minute Preview
1.2.1.2: : Life Science
3L.1.2.1.2: : Plan and conduct an investigation to determine how amounts of sunlight and water impact the growth of a plant.
Germination
Plant seeds and watch how many sprout. Examine what factors affect germination. Vary the amount of heat, water, and light the seeds get. Practice designing controlled experiments and using the scientific method. 5 Minute Preview
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
2: : Looking at data and empirical evidence to understand phenomena or solve problems
2.1: : Analyzing and interpreting data
2.1.1: : Students will be able to represent observations and data in order to recognize patterns in the data, the meaning of those patterns, and possible relationships between variables.
2.1.1.1: : Earth and Space Science
3E.2.1.1.1: : Record observations of the sun, moon, and stars and use them to describe patterns that can be predicted.
Seasons: Earth, Moon, and Sun
Observe the motions of the Earth, Moon and Sun in three dimensions to explain Sunrise and Sunset, and to see how we define a day, a month, and a year. Compare times of Sunrise and Sunset for different dates and locations. Relate shadows to the position of the Sun in the sky, and relate shadows to compass directions. 5 Minute Preview
2.2: : Using mathematics and computational thinking
2.2.1: : Students will be able to use mathematics to represent physical variables and their relationships; compare mathematical expressions to the real world; and engage in computational thinking as they use or develop algorithms to describe the natural or designed worlds.
2.2.1.1: : Earth and Space Science
3E.2.2.1.1: : Organize and electronically present collected data to identify and describe patterns in the amount of daylight in different times of the year.
Seasons: Earth, Moon, and Sun
Observe the motions of the Earth, Moon and Sun in three dimensions to explain Sunrise and Sunset, and to see how we define a day, a month, and a year. Compare times of Sunrise and Sunset for different dates and locations. Relate shadows to the position of the Sun in the sky, and relate shadows to compass directions. 5 Minute Preview
3: : Developing possible explanations of phenomena or designing solutions to engineering problems
3.1: : Developing and using models
3.1.1: : Students will be able to develop, revise, and use models to represent the students’ understanding of phenomena or systems as they develop questions, predictions and/or explanations, and communicate ideas to others.
3.1.1.1: : Physical Science
3P.3.1.1.1: : Develop a model to describe that light reflecting from objects and entering the eye allows objects to be seen.
Eyes and Vision 1 - Seeing Color
Observe how different colors of light are reflected or absorbed by colored objects. Determine that white light is a combination of different colors of light, and that one or more component colors may be reflected when white light is shone on an object. Understand that we see an object when light reflected from the object enters our eye. 5 Minute Preview
Eyes and Vision 2 - Focusing Light
Once light enters the eye, it must be focused on the retina. Manipulate the pupil diameter to regulate the amount of light that enters then eye, then change the lens shape to focus light. Determine the changes in lens shape needed to maintain focus as the object distance changes. This is a followup to the Eyes and Vision 1 - Seeing Colors lesson. 5 Minute Preview
Eyes and Vision 3 - Sensing Light
Observe how photoreceptors on the retina are stimulated by different colors of light. Determine that cone cells are stimulated by specific colors of light and enable us to see color, while rod cells are stimulated by various colors and do not contribute to color vision. Experiment by varying the percentage of rod and cone cells in normal and dim light to see how rod cells help with night vision. 5 Minute Preview
3.2: : Constructing explanations and designing solutions
3.2.1: : Students will be able to apply scientific principles and empirical evidence (primary or secondary) to explain the causes of phenomena or identify weaknesses in explanations developed by the students or others.
3.2.1.1: : Life Science
3L.3.2.1.1: : Construct an explanation using evidence from various sources for how the variations in characteristics among individuals of the same species may provide advantages in surviving, finding mates, and reproducing.
Natural Selection
You are a bird hunting moths (both dark and light) that live on trees. As you capture the moths most easily visible against the tree surface, the moth populations change, illustrating the effects of natural selection. 5 Minute Preview
4: : Communicating reasons, arguments and ideas to others
4.1: : Engaging in argument from evidence
4.1.1: : Students will be able to engage in argument from evidence for the explanations the students construct, defend and revise their interpretations when presented with new evidence, critically evaluate the scientific arguments of others, and present counterarguments.
4.1.1.1: : Life Science
3L.4.1.1.1: : Construct an argument about strategies animals use to survive.
Honeybee Hive
Explore life in the hive by meeting workers, drones, and the queen bee herself! Visit flower patches to determine the best sources of food, and then perform a waggle dance to let the other bees know where to go. Can you help the bees find enough food to save the hive? 5 Minute Preview
4.2: : Obtaining, evaluating and communicating information
4.2.1: : Students will be able to read and interpret multiple sources to obtain information, evaluate the merit and validity of claims and design solutions, and communicate information, ideas, and evidence in a variety of formats.
4.2.1.1: : Life Science
3L.4.2.1.1: : Obtain information from various types of media to support an argument that plants and animals have internal and external structures that function to support survival, growth, behavior, and reproduction.
Comparing Climates (Customary)
Compare average temperatures, precipitation, humidity, and wind speed for a variety of locations across the globe. Explore the influence of latitude, proximity to oceans, elevation, and other factors on climate. Observe how animals and plants are adapted to climate and their environment. This lesson uses U.S. customary units. 5 Minute Preview
Comparing Climates (Metric)
Compare average temperatures, precipitation, humidity, and wind speed for a variety of locations across the globe. Explore the influence of latitude, proximity to oceans, elevation, and other factors on climate. Observe how animals and plants are adapted to climate and their environment. This lesson uses metric units. 5 Minute Preview
Flower Pollination
Observe the steps of pollination and fertilization in flowering plants. Help with many parts of the process by dragging pollen grains to the stigma, dragging sperm to the ovules, and removing petals as the fruit begins to grow. Quiz yourself when you are done by dragging vocabulary words to the correct plant structure. 5 Minute Preview
Honeybee Hive
Explore life in the hive by meeting workers, drones, and the queen bee herself! Visit flower patches to determine the best sources of food, and then perform a waggle dance to let the other bees know where to go. Can you help the bees find enough food to save the hive? 5 Minute Preview
Correlation last revised: 3/14/2023
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.
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