Valentine's Day candy hearts mixed with a chemical reaction experiment is the best way to celebrate with your students. Whether your school allows a class party or not this still can be slipped in as fun for the kids, yet still learning and sticking to standards at the same time. This project can be done in one day or spread out for a few days. It would be a great activity to do in celebration of Valentine’s Day, leading up to it or the next day when the kids still want to be having fun. The l