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K-1: The Senses

Author(s): Barbara Tharp, MS, Michael Vu, MS, Delinda Mock, BA, Christopher Burnett, BA, and Nancy Moreno, PhD.

Changing Tastes

Procedure: Part 2

Give each student a plastic spoon and a clean, clear plastic cup half full of water. Tell the class that they will experiment with their sense of taste. 

Ask, What does lemon juice taste like without sugar? [Sour] Why do people add sugar to lemon juice? [To make it taste sweet] Do you like things very sweet or only slightly sweet? Give students time to respond. Then, direct each student to put one spoonful of lemon juice and one spoonful of sugar into his or her cup and stir gently. Be sure students understand that they should use only one spoon for each container.

Prompt students to take a small sip. Ask, Was your lemonade sweet enough? Does the lemonade still taste sour? What other things have you tasted that were sweet and sour?

Instruct students to add another spoonful of sugar to their cups, stir gently and taste again. Ask, Did you like the lemonade more or less after adding the second spoonful of sugar? Explain that preferences (likes and dislikes) are shaped by information in the brain, and differ from one person to the next. Also mention that preferences can change over time. 

Have students write a sentence in their notebooks about what they have learned. 

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