Think-Its Reusable Double-Sided Math Mats - Subtraction - The Fun way to learn
Think-Its Math Mats take the drudgery out of learning math. Using an ordinary wipe-off marker, a child writes answers to questions and checks the answers by pressing a thumb over a concealed answer box.
Grade 1 and up
Double-Sided Write-On / Wipe-Off Activities
Rub black block to see the answer!
For best results, use dry or wet erase markers, crayons or non-toxic grease markers.
Only for use at room temperature