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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.

In this activity, learners stain fabrics--on purpose!

In this activity, learners will test soil content using their sample, some water and a container that seals.

In this activity, learners will experiment with changing flower colors. Learners will investigate the effects of acids and bases on flower colors.

In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.

In this activity, learners explore how civil engineers solved the challenge of moving water via irrigation.

In this activity, learners will investigate and compare the root systems of plants. Explore how weed and edible plant roots differ, and take a closer look inside with the careful use of a knife!

In this online activity, learners find out whether they are smart enough to survive as a plant.

In this activity, learners explore how engineers work to solve the challenges of a society, such as efficient planting and harvesting.

Learners place cut flowers in colored water and observe how the flowers change. The flowers absorb the water through the stem and leaves.