# Difference between revisions of "Subtraction With Strip Board"

Subtraction With Strip Board
Math - Memory Work
Level Primary
Age 5+

This activity gives the child practice figuring out and memorizing subtraction facts.

## Presentations

### Presentation One

1. Take the material to a mat or table. Lay out as shown.
2. The first page should have just one problem: 18-9=
Take the 9 strip and cover up the numbers starting from the end. The last visible number is the answer.
3. The next page should have two problems: 17-9= and 17-8=
Lay the shortest of the plain wooden strips over the number 18 on the board.
4. Take the 9 strip and cover up the numbers starting from the end. The last visible number is the answer.
5. Then take the 8 strip and cover up the numbers starting from the end. The last visible number is the answer.
6. next step

1. step one
2. next step
3. next step
4. next step
5. next step

## Material

### Where to Buy

Thinkamajigs \$28.95
Thinkamajigs \$116.95 (AMI)
Hello Wood \$59.00 (variation on the traditional material) Visit www.kidkenmontessori.com