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In this activity, learners create a soil and water model of a single-cell life environment and study living microorganisms.

Learners combine different plant solutions -- made from fruits, vegetables, and flowers -- with equal amounts of vinegar (acid), water (neutral), and ammonia (base).

In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials.

In this long-term activity, learners make a home for a colorful community of microorganisms.

In this activity, learners grow germs collected from their hands and other objects. They cultivate the germs on a growth medium (such as slices of grapefruit or processed cheese) for a week.

This activity provides an opportunity for learners to observe and examine how carbon dioxide, water, and light produce glucose/starch through a process called photosynthesis.

In this activity, learners will explore vegetative propagation while preparing food scraps to grow into plants.

In this four-day activity, learners grow bacteria and/or fungi from a variety of locations and compare the results.

This activity features two connected hands-on activities about dinosaur bones.