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

Learn about chemical reactions by making a Bubble Bomb, a plastic bag you can pop with the power of fizz.

Create a chemical reaction that makes cheese! This hands-on activity demonstrates that molecules and atoms are tiny particles that make up everything around us.

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 related to rotational inertia (page 1 of the PDF under SciGirls Activity: Microgravity), learners will use a bit of scientific experimenting to test if open-faced peanut butter sandwi

In this simulation, learners explore how ocean currents spread all kinds of pollution—including oil spills, sewage, pesticides and factory waste—far beyond where the pollution originates.

DNA is the thread of life. Encoded in its genetic sequence is the information that makes each of us unique. This activity allows you to see long, stringy strands of DNA extracted from wheat germ.

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

Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.

In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation.

In this activity, learners use detergent solution to compare two solutions containing vinegar and cream of tartar.

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.

In this activity, learners add dilute bleach solution to water that has been dyed with yellow, blue, and green food color.

In this activity on page 7 of the PDF, learners explore how engineers characterize building materials.

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

In this activity, learners separate the protein from milk and and use it to make their own glue.

In this activity, learners explore the different salinities of various sources of water by taste-testing.

Learners use a simple process to extract DNA from strawberries.

In this activity, learners follow clues to find five puzzle pieces, then assemble them. This activity works well with a whole group, individuals, or families.