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Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins.

Learners observe a simple balloon model of an electrostatic precipitator. These devices are used for pollutant recovery in cleaning industrial air pollution.

In this engineering design challenge, learners make a bird and then control its flight with attached strings.

In this activity, learners use Jell-O to explore lenses. Learners cut Jell-O into convex and concave lens shapes and examine how light exits each lens in a darkened room.

In this robotics activity, learners find ways to express emotions and feelings using only body movements, not facial expressions.

In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

In this activity, learners explore the question "What is paper?" Learners discover the processes and materials required to make paper while experimenting with different recycled fibers and tools.

Build and test a scale model of a rainforest canopy walkway.

In this activity, learners build a figure that moves and "comes to life" when they pull its string.

In this activity, learners simulate the process of DNA fingerprinting by using electricity to separate colored dyes.

This activity (on pages 24-29) combines science and art to introduce learners to how different animal pollinators spread pollen from one plant to another, and how certain shapes, colors, and smells of

In this activity, learners investigate the history and development of agricultural biotechnology.

In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.

In this activity about engineering, nutrition, and physical activity, learners design and build a healthy bone model of a space explorer which is strong enough to withstand increasing amounts of weigh

In this activity, learners design a therapeutic agent to image and/or cure various diseases in the respiratory system.

In this activity related to plant biotechnology, learners use restriction enzymes to cut up DNA from a virus called Bacteriophage λ, a process known as restriction digestion.

In this activity related to plant biotechnology, learners transform a strain of E. coli using green fluorescent protein from a bioluminescent jellies.