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In this optics activity, learners create flip books by drawing an image like an eye opening and closing on 24 small pages of paper.

Learners complete a series of hands-on and investigative activities to explore cumulus clouds.

In this optics activity, learners explore how many objects they can see in a set of mirrors (hinged like a book) at various angles.

In this story time program, young learners listen to the Dr.

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.