Materials
Chart paper Marker
Clear plastic cups Club soda or flavored seltzer
Box of raisins
Instructions
1. Discuss the experiment with the children and talk about what you are going to do.
2. Describe how scientists make predictions called hypotheses and ask the children what their hypotheses about the experiment are. Write each hypothesis on chart paper.
3. Demonstrate the experiment by first filling a glass halfway with club soda or seltzer, then quickly putting five raisins in the glass, one at a time. Soon you will be able to see the raisins move up and down and do flips. The bubbles make them move.
4. Explain that the bubbles are filled with gas and when the bubbles cover the raisins, the raisins rise and appear to dance. Discuss the class hypothesis. Then you can give each child a glass and some raisins to repeat the experiment. The children can also taste the seltzer and raisins if they like.More to doMath: Provide the class with different types of seedless raisins, such as golden and brown. Ask them to taste each and graph their taste preference results.Storytelling: Try using "If I Were a Raisin" as a class story title. Each child could contribute one silly sentence.
