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No Saliva, No Taste?
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In this activity (4th activity on the page), learners test to see if saliva is necessary for food to have taste.
Smell the Difference
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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.
Colored Shadows
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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.