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This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel.

This fun and simple hands-on astronomy activity lets learners build a scale model of the universe with little more than adding machine tape.

In this chemistry meets cooking activity, learners make carbonated, vanilla ice cream using dry ice and denatured ethanol, which are both inexpensive and accessible.

In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.

In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.