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In this activity about sleep rhythms (on page 25 of the PDF), learners will investigate how changing the time they go to bed impacts their own sleep patterns.

In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection.

This game depicts a woman going through her day, faced with various loud sounds.

In this activity, learners compare their own strength to ants through a series of physical tests.

This game plays a dozen different sounds, altered to simulate what they would sound like if you had hearing loss.

In this activity, Christina Elson, an archaeologist from the American Museum of Natural History, guides learners as they investigate an "artifact" and record their observations in a field journal.

In this exercise (Activity #2 on page), learners test their distance vision to evaluate their overall eyesight.

In this online activity, learners role-play as medics, treating a patient with missing organs. Learners select different organs, then drag them into the proper location in the patient's body.

In this activity, learners explore how engineers incorporate biometric technologies into products as well as the challenges of engineers who must weigh privacy, security and other issues when designin

Can you deceive your eyes? When your eyes work normally, you see a nice 3 dimensional picture, but what happens when each eye sees something different?

This activity combines learning about nutrition, math of measurement and proportion, and healthy eating. Start by distributing food packages with Nutrition Facts labeled.

This is a quick and simple demonstration about reflexes (second activity on the page).

Use this hands-on activity to demonstrate infrared and thermal radiation.

In this online game, learners test their skills of categorization.

This is a quick game about self-assembly (page 2 of PDF under Self-Assembly Activity). Like the molecules of DNA, learners will self-assemble into a pattern by following a simple set of rules.

In this quick and simple activity about reflexes (third activity on the page), learners conduct a simple test to explore the knee jerk reflex, typically conducted at the doctor's office.

In this quick and simple activity about reflexes (at the top of the webpage), learners conduct a simple test to explore pupillary response.

In this activity (7th activity on the page), learners use their sense of touch to identify mystery objects hidden in socks.

Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins.

These math posters have questions written on them, such as: How fast can a cheetah run? or How long can a giant tortoise live? Post these around the room or leave them out for children to explore.