Mandisa | Happy Toddler Playtime on Instagram: "Comment PUMPKIN SCIENCE and I’ll send you the step-by-step + more pumpkin science experiment ideas! If you’ve never made a pumpkin volcano, this is the season to try it! Scoop out a pumpkin, add a little baking soda, dish soap, and food coloring, then pour in vinegar to watch it fizz, foam, and bubble over like a spooky pumpkin eruption. It’s part craft, part science experiment, and always a kid favorite. The best part? You can repeat it over and o