Math-U-See does not sell their materials to retail bookstores, preferring instead to sell their products at home school conventions or through their website. As a result, we cannot carry these books new. We often have used copies of their materials available, but if you cannot see the blue "buy used" button, it is not currently available.
Focus: Single Digit Addition/Subtraction
Prerequisite: Complete the Primer or be able to count to 9 and write his numbers.