"The Dissolving Peeps Experiment - what does it take to dissolve a marshmallow Peep? From Mom to 2 Posh Lil Divas. I'm thinking this would make a great science experiment to try with the kids over Spring Break!
This place has some great science and history ideas for the third grade. These could be edited to work with a higher or lower grade. Third Grade Thinkers: Science: Earth Cycles Need to make sure its accurate to prevent misconceptions!