Grow a windowsill garden with your kids using food scraps (with a free printable)
Exploding bags with baking soda and vinegar-science lesson. They take off like rockets!--kids would love this
Another Pinner said: This kept my 2 year busy for an entire hour and my 4 year old busy for 2 hours! YAY! Drop vinegar tinted with food coloring onto a pan filled with baking soda. Sheer minutes of colorful fizziness!!... Pretty sure we will be doing this soon! GENIUS!
3 different types of volcano activities for kids// did the first one. followed the directions exactly and it was kind of lame, however, when the boys decided to go all mad scientist on it and added more baking soda and vinegar, it got pretty crazy and was pretty fun. :)