Preschools LOVE a good explosion! Mrs. Rachel gave them just that as she mixed vinegar and baking soda inside a carved jack-o-lantern. The children were thrilled to see the pumpkin fizz! The fizzy chemical reaction came right out the pumpkin’s mouth. Yes, it looked as if it was throwing up! As the children left this day, I heard them telling parents all about it! Definitely the highlight on this KDO day.