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In this activity, learners will make a thaumatrope, an old-fashioned optical illusion that dates back to the 1820s.

In this activity, learners try to blow up a balloon hanging inside of an empty bottle.

In this activity, learners create an optical illusion by spinning two attached cups. A round ball seems to magically appear when the cups spin.

In this activity about depth perception, learners create an optical illusion in a shoe box.

In this optics activity, learners conduct an experiment to find out why two eyes are better than one!

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

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