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This is a quick activity (on page 2 of the PDF under Stained Glass Activity) about the "Tyndall effect," the scattering of visible light when it hits very small dispersed particles.

In this activity, learners explore the great pump in their chests--the human heart!

This lesson focuses on how materials behave differently as their surface area increases.

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

In this space science activity, learners explore transits and the conditions when a transit may be seen.

In this activity, learners solidify their conceptualization of cells by building a model of a cell in a ziplock bag.

In this activity about the relationship between food and energy (page 5 of PDF), learners conduct an experiment to compare how much energy is released as heat from two different foods.

In this activity, learners investigate the sense of hearing and plan and conduct their own experiments.

In this activity, learners investigate the touch sensory system and discover how to plan and carry out their own experiments.