Introduce children to the math they're ready to learn next with Thinking Kids. Math, the new CenterSOLUTIONS. resource that opens young minds to new ways to think about math. Each kit includes 84 22cm " x 28cm ", full-colour cards that can be used with manipulatives and wipe-away markers to promote visualising math rather than relying on fact memorization. Games/Manipulatives Type: Math Learning Games; Age Recommendation: Grade 1; Number of Cards: 84.