The kids fell in love with the Pixar short film I Lava You (shown before Inside Out). So, while we listened to the single "I Lava You", we completed this volcano experiment. First we cut a watermelon in half. Then we dug out all of the fruit and saved it in a bowl. I flipped the watermelon over on to a baking sheet. We cut a hole out of the top of the watermelon. Then I slide in a plastic cup. We filled the cup with baking soda. The each kid got a coffee mug of vinegar. They added red food coloring to their vinegar. Then they dumped their vinegar into the volcano.
They love any experiment with baking soda and vinegar. This was no exception. It was a lot of fun!