Subtraction With Strip Board: Difference between revisions
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===Where to Buy=== | ===Where to Buy=== | ||
[https://www.thinkamajigs.com/subtraction-strip-board/ Thinkamajigs] $28.95<br> | |||
[https://www.thinkamajigs.com/subtr-strip-board/ Thinkamajigs] $116.95 (AMI)<br> | |||
[http://shop.hellowood.com/Subtraction-Strip-Board-M75.htm Hello Wood] $59.00 (variation on the traditional material) | [http://shop.hellowood.com/Subtraction-Strip-Board-M75.htm Hello Wood] $59.00 (variation on the traditional material) | ||
Visit www.kidkenmontessori.com | Visit www.kidkenmontessori.com |
Revision as of 10:29, 11 May 2017
Subtraction With Strip Board | |
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Math - Memory Work | |
Level | Primary |
Age | 5+ |
This activity gives the child practice figuring out and memorizing subtraction facts.
Presentations
Presentation One
- 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
Points of Interest
Control of Error
Variations and Extensions
Material
Where to Buy
Thinkamajigs $28.95
Thinkamajigs $116.95 (AMI)
Hello Wood $59.00 (variation on the traditional material)
Visit www.kidkenmontessori.com