This summer, I will be in charge of planning weekly science experiments/ activities/ explorations for a class of 3-5 yr olds. I already have some ideas, and a few books, but I could always use suggestions! What are your favorite preschool science activities? I know in the class I just moved out of (I moved from a 9 month preK to a year round preschool classroom), we made popcorn "dance" in soda water, and did an acidity test with purple cabbage and other ingredients (boil the cabbage, add egg/ baking soda/ etc and it changes from purple to other colors). So far this summer, we have been exploring what happens to ice in our water table.