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In this outdoor activity, learners investigate spider webs and feeding behavior, particularly how spiders trap food in their sticky silk webs while not getting stuck themselves.

In this chemistry activity, learners use the lowered freezing point of water to chill another mixture (ice cream) to the solid state.

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

Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?

In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

In this activity, learners use chemistry to “self-assemble” gummy shapes. Learners discover that self-assembly is a process by which molecules and cells form themselves into functional structures.

In this activity, learners test the pH of safe liquids available at home by creating a pH indicator from mashed blueberries.

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

In this activity, learners explore a bucket of sand and beach objects.

In this activity, learners explore deoxyribonucleic acid (DNA), a nanoscale structure that occurs in nature.

Many germs spread by our hands, and often times, people don't wash their hands well enough to get rid of germs.

In this activity, learners make balloon models of disease-causing bacteria.

In this activity, learners explore chemistry and the microbial world by making their own sourdough starter and bread at home using only flour and water.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.