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In this activity (posted on April 18, 2011), learners follow the steps to construct a zoetrope, a device that produces an illusion of action from a rapid succession of static pictures, using a 16" bik

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.

In this activity, learners build cars using syringes and water-powered hydraulics. Learners construct the car frame out of cardboard and set up a hydraulic system to raise and lower the car.

Learners use shop tools and various materials to construct a magnetic spinner and a compass.

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

In this activity, learners construct a device that allows them to view 2-D images in 3-D.