Math skills really stick with our all-in-one magnetic math tin—where the lid becomes the activity board! Children just lift the magnetic lid off the sturdy storage tin, flip it over and place one of 15 different activity mats inside. Then they use the easy-grip magnets to fill in the blanks…and get hands-on practice with measuring objects and using nonstandard measurement! You get an activity tin, 15 mats and 25 magnets. Tin measures 8 3/4" x 10 3/4".