Math practice meets tactile exploration—with colourful match-ups students can’t wait to get their hands on! Children just select an activity card…touch and count the textured dots to add or subtract within 10 or 20 or identify a two- or three-digit number…then find the matching number card to show their answer! You get all 3 sets, each with 40 self-checking match-ups in 4 colour-coded pockets, plus a guide. Pockets measure 4" x 9 3/4". Each set also available separately.