Complete counting, matching, more than/less than, predicting, ordering, positioning and pattern recognition activities to develop key number skills. For use with the Smart Tray® (sold separately). Contains 25 cards, complete with counting, matching, more than / less than, predicting, ordering, positioning and pattern recognition activities to develop key number skills. Includes the use of visual patterns for implicit learning. Self-correcting, multi-sensory and engaging. Follows a developmental progression. Details:10.6" x 8" x 1" package sizeContains 25 cardsSelf CorrectingFor use with the Smart Tray (sold separately)Grades K-1