When snack time beckons, use it to work some math on the fly. All you need is a bag of Goldfish® crackers, a plain sheet of paper, and a pencil. It's time for "goldfish math"! No Goldfish® crackers on hand? No worries. You can also use small pretzels, crackers, or fruit pieces if that's what you've got in the snack cabinet. Here are four challenges, easiest first, and aimed at kids in kindergarten through second grade. See which one best fits your child’s level.