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Seeing in the Dark
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In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

Accommodating Accommodation
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In this demonstration (18th on the page), learners conduct a simple test to explore how the cornea refracts light, which is further bent by the eye lens through a process known as accommodation.

Make a Comet Model and Eat It!
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In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

Shifting Backgrounds, Shifting Images
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In this quick activity/demonstration (5th on the page), learners explore depth perception.

Have Your DNA and Eat It Too
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In this activity, learners build edible models of DNA, while learning basic DNA structure and the rules of base pairing.

Soda Brand vs. Height Experiment: Soda Geyser Series #4
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In this activity, learners conduct a controlled experiment to examine which brand of soda makes the best (highest) soda geyser.

Model Eardrum
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In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

Exploring Properties: Surface Area
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This hands-on activity demonstrates how a material can act differently when it's nanometer-sized.

Heavy Air
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In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick.

Repulsive Grape: Diamagnetism
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Do grapes, yes the grapes from the grocery store, move in the presence of a very strong magnet?

Shape Up!
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In this activity (pages 8-9), learners investigate the properties of smart materials, which are materials that respond to things that happen around them.

Patches the Cat: A Print-and-Build Paper Sculpture Kit
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In this activity, learners get hands-on with geometry by making a polyhedron kitty sculpture.

Toilet Model
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In this activity, PVC pipe, plastic water bottles and vinyl tubing are used to make a simple working toilet model. The model shows the role of a siphon in the flushing of a toilet.

Red, White and Blue II Demonstration
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In this chemistry demonstration, learners investigate the rule "likes dissolve likes" by combining three, immiscible liquids to create a colorful density column.

Terrestrial Hi-Lo Hunt
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In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area.

Erupting Fizz
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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

Safer with Science-Masks
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Why should we wear masks? Do masks work? Do some masks work better than others? Learners find out in this activity.

Trees: Recorders of Climate Change
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In this activity, learners are introduced to tree rings by examining a cross section of a tree, also known as a “tree cookie.” They discover how tree age can be determined by studying the rings and ho

Squishy Soil
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In this activity, learners will investigate the part of soil. Explore how clay, silt, and sand make up the dirt in your background. Activity includes step-by-step instructions and extension ideas.

The Great Fossil Find
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On an imaginary fossil hunt, learners "find" (remove from envelope) paper "fossils" of some unknown creature, only a few at a time.