Looking for an excuse to celebrate Valentine’s Day with your students, and, you know, eat candy? We have it right here with these candy heart science experiments and math activities. While the company making the beloved candy hearts went bankrupt last year (though there is hope for a future revival), you can still buy conversation hearts from other brands. Grab some Brach’s conversation hearts, or try the Sweethearts brand, if you have the heart (see what we did there?)—and budget. …