Math skills really stick with our all-in-one magnetic math tins—where the lid becomes the activity board! Children just lift the magnetic lid off the sturdy storage tin, flip it over and place an activity mat inside. Then they use the easy-grip magnets to fill in the blanks…and get hands-on practice with identifying shapes, simple addition, number sequencing…and more! Complete set includes all 4 activity tins shown, each with 15 mats and up to 25 magnets. Tins measure 8 3/4" x 10 3/4". Each activity tin also available separately.