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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 simulation of synapses, learners act out communication at the neural level by behaving as pre-synaptic vesicles, neurotransmitters, post-synaptic receptors, secondary messengers and re-uptake

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.

In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures.