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Our Sense of Sight: Eye Anatomy and Function
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In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

Invent an Insect
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In this creative activity, learners will find out what makes an insect an insect by studying examples of insect adaptations and by examining why there are so many different types of insects.

See the Light
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Learners mix a solution of luminol with hydrogen peroxide to produce a reaction that gives off blue light.

Size and Distance
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In this activity about depth perception, learners create an optical illusion in a shoe box.
Tropical Belt
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This lesson familiarizes learners with the term "tropical belt." First, learners locate the equator, Tropic of Cancer and Tropic of Capricorn on a map and trace these lines with a crayon.

Fish Wheels
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In this activity, learners cut out and assemble wheels to explore how variations in fish body structures (mouth shape/position/teeth, body shape, tail shape, and coloration patterns) allow fish to sur

Don't Stop for Hitchhikers
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In this activity, learners role-play the part of lake inhabitants and the aquatic exotics who displace the native species.

Is It Living?
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This activity (on pages 10-12 of the PDF) encourages learners to consider what makes living things different from non-living things.
Composting: A Scientific Investigation
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In this activity, learners conduct a scientific investigation involving decomposition and discover that the life cycle of trash is affected by its organic or inorganic nature.

Bee Builders
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In this activity, learners make a model of a beehive using simple materials.

Memory Match
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In this classic memory game (on pages 37-45 of PDF), learners turn over tiles to reveal images on the back.

Clipbirds
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In this simulation of natural selection, learners use binder clips in three different sizes to represent the diversity of beak sizes in a bird population.

In Proportion
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Through this nutrition activity (page 5 of the PDF), learners will understand—and probably be surprised by—how big serving sizes of various foods should be.

Go Bug!
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By playing a card game similar to "Go Fish," but based on the stages of metamorphosis, learners will be able to see how insects change in form as they grow and will consider the advantages of undergoi

Energy Sources
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In this activity about the relationship between food and energy (page 5 of PDF), learners conduct an experiment to compare how much energy is released as heat from two different foods.

Pollution Diffusion
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Learners design their own experiment to investigate how pollution diffuses through ground material.
Plants: Hanging Tough
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In this hands-on activity, learners will become familiar with the special adaptations of rainforest plants and discover the conditions needed for tropical trees to survive along with what can impinge

Bring It Home: Animal Tracks
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In this activity, learners create handmade animal track stamps. Learners research animal tracks, draw the shapes on moleskin, and then stick the shapes onto blocks of wood to make stamps.

Bone Stress
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In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.

Biological Succession in a Microecosystem
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This laboratory activity helps learners understand the concept of biological succession by simulating the process in a microenvironment with various protozoans.