# Subtraction With Strip Board

From Montessori Album

Subtraction With Strip Board | |
---|---|

Math - Memory Work | |

Level | Primary |

Age | 5+ |

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

## Contents

## Presentations[edit]

### Presentation One[edit]

- Take the material to a mat or table. Lay out as shown.
- The first page should have just one problem: 18-9=
- The next page should have two problems: 17-9= and 17-8=
- Take the 9 strip and cover up the numbers starting from the end. The last visible number is the answer.
- Then take the 8 strip and cover up the numbers starting from the end. The last visible number is the answer.
- next step

### Presentation Two[edit]

## Points of Interest[edit]

## Control of Error[edit]

## Variations and Extensions[edit]

## Material[edit]

### Where to Buy[edit]

Thinkamajigs $28.95

Thinkamajigs $116.95 (AMI)

merocomontessori $15.5 (Hundred Board)

Hello Wood $59.00 (variation on the traditional material)
Visit www.kidkenmontessori.com