Subtraction Facts 11-20
$37.00
Description
Children’s confidence will grow as they:
- use the accompanying 20-grid to represent all parts of the equation in a personal way
- make fewer mistakes because they see a proof in the picture
- find recalling subtraction facts to 20 easier than ever
- develop a keen understanding of balancing equations
- prove solutions on a 20-grid
Grades 1-4