Use heart_shaped candy to teach the more simple mathematical arithmetic; like addition and subtraction. Provide children with pre_determined math problems that they can figure out using the sweets. Alternatively, make heart_shaped numeral cards that children can arrange on their desk to solve a math problem. You could give them a total to reach and they must use the cards to create the question. There are websites that offer a vast array of Valentine's Day worksheets. They offer varying levels of difficulty to make them suitable for Grade One to Grade Five. Each set of math worksheets include all the major mathematical problems; addition, subtraction, multiplication, division and even word problems. All these sheets include Valentine's Day pictures. The online math worksheets are also available with pre_written word problems that are all associated with what happens on Valentine's Day.
I will admit that there is one type of worksheet that I used in the past and found relatively beneficial, although it had a different kind of flaw. For my Basic Math, Pre_Algebra, and Algebra classes, I had several books of "self_checking" worksheets. These worksheets had puns or puzzle questions at the top, and as the students worked the problems they were given some kind of code for choosing a letter to match that answer. If they worked the problems correctly, the letters eventually answered the pun or riddle. Students enjoyed these worksheets, but there are a couple problem areas even with these worksheets. Some students would get the answer to the riddle early and then work backward from letter to problem answer, so they weren't learning or practicing anything.