AMERICAN CLASSICS-Craft Medley Krafty Kids: Arithmetic Clay Molds. Now your kids can work on their numbers and basic math while they play! Use these clay and dough cutters to cut out numbers and mathematical operations and have fun while learning. This package contains fifteen clay molds including the numbers zero through nine and the symbols for addition; subtraction; multiplication; division; and equals. WARNING-CHOKING HAZARD-Small parts. Not for children under 3 years. Conforms to ASTM D-4236; ASTM F-963; and EN-71. Imported.