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In this activity, learners construct paper airplanes that twist and turn.

In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.

In this health activity, learners create a device so that they not only feel their heartbeat, but also see it, using a straw and some clay.

In this engineering activity, young learners investigate multi-level buildings.

This activity is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Learners look through two cups with small holes in them to simulate what it'

During this activity, learners take part in a variety of tasks which involve moving and balancing different body parts.

In this activity, learners use a soda can to decode a secret message. Learners wrap scytale (pronounced ski-tally) code around a can and challenge friends to see if they can crack the codes.

In this activity, learners make a foam packing peanut "flink"--neither float away nor sink--in water. Learners experiment with materials to make a Flinker that "flinks" for 10 seconds.

In this optics activity, learners investigate afterimages.