This Valentine's Day activity is a fun way to help students review prime and composite numbers. Two cupcakes are included--one for prime numbers and one for composite numbers. A sheet of candy hearts with both prime and composite numbers is included. Students can cut and paste candy hearts onto the correct cupcake. Two sets of candy heart numbers are included. After sorting the hearts, students can color in their cupcakes, cut them out, and paste them together. This will make a cute classroom decoration for February! A BUMP game and three coloring worksheets are also included. Enjoy!