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In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.

In this activity, learners build a figure that moves and "comes to life" when they pull its string.

In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.

In this activity, learners extract DNA from a strawberry and discover that DNA is in the food they eat.

In this biology/ecology activity, learners construct a terrarium out of a tennis ball container. This terrarium is unique because it never has to be watered.

In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.

In this activity, learners build a musical drum using a cardboard tube, plastic wrap, and beads.