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In this activity (1st on the page), learners find their blind spot--the area on the retina without receptors that respond to light.

In this activity (4th activity on the page), learners test to see if saliva is necessary for food to have taste.

In this two-part activity, learners use household items to smell the difference between some stereoisomers, or molecules which are mirror images of one another.

In this activity, learners make a Benham Top to explore visual illusions and optics.