Rainbow Playdough Addition Frames | Addition to 10. These rainbow playdough addition frames are perfect for practicing sums up to ten, ways to make ten, and for St. Patrick's Day math centers! Preschool and Kindergarten students can use these with play dough, mini erasers, pom poms, beads, or other hands-on manipulatives. These rainbow ten frame activities are great for math centers, morning work tubs, busy bins, and Montessori.