Eyedropper Volcanoes … great idea from Preschool Playhouse On a tray, place a pile of baking soda. Mix vinegar + a few drops of food coloring in a cup. Give the kids an eyedropper. Have them fill it with vinegar, squeeze onto the baking soda and watch mini volcanoes erupt!
Now this is cool science. Make a watermelon volcano or an erupting watermelon using baking soda science. Fun science for Summer and perfect for preschool, kindergarten, and grade school age kids. Outdoor science and 4th of July science too. Messy play for kids.