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

In this activity, learners will create an optical illusion top. Learners will explore color mixing, physics and design through this activity.

During this hands-on activity, learners are briefly exposed to moviemaking and animation, when they create their own thaumatropes.

In this optics activity, learners build an animation tool to make mini movies. When you spin a phenakistascope, the pictures move so quickly that your eyes and brain can't separate the images.

Design and create an optical illusion toy that makes two pictures appear to become one. This is called a thaumatrope and will allow the learner to investigate the phenomenon of persistence of vision.

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

In this activity, learners make an optical illusion toy from the 1800s to explore persistence of vision.

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

In this optics activity, learners build a spy tool to secretly view things over walls or around corners.