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This lab activity is about toxic substances like pesticides and their effects on biological systems. The activity starts with an introduction of how birds sequester calcium to make an egg.

In this activity about engineering, nutrition, and physical activity, learners design and build a healthy bone model of a space explorer which is strong enough to withstand increasing amounts of weigh

Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves.

This three-part lab helps learners understand the essential principles governing diffusion and osmosis.

This experiment allows learners to experience a small scale "epidemic," demonstrating the ease with which disease organisms are spread, and enables learners to determine the originator of the "epidemi

In this plant science activity, learners conduct four experiments to observe how plants respond to sunlight and gravity.