Key Features :
i : Number Sleuth builds number sense!ii : Students puzzle and play with numbers using essential math concepts. Students solve the problems featured on the Challenge Cards by circling the correct responses on their dry-erase Digit Card.iii : Instructions and ideas for multiple game variations included. Ideas for whole class or small group math stations also provided.iv : Each grade level includes 60 double-sided cards: 30 Challenge Cards and 30 Digit Cards.