Don't let your mentally agile math kiddos wither in the dust. Students have plenty of cognitive bandwidth to memorize their 13 multiplication math facts and beyond. In their 'free time,' they can practice these advanced facts. Product comes with a .doc of the 13s and 14s facts. Print out the facts first on thick paper or stock paper and then flip the paper over and feed it through the printer again to have the products for the facts printed on the reverse side. Use a paper cutter to cut out the