Subtraction With Strip Board: Difference between revisions
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== Presentations == | == Presentations == | ||
=== Presentation One === | === Presentation One === | ||
# | # Take the material to a mat or table. Lay out as shown. | ||
#:[[File:Sub Strip Board 1.JPG| | #:[[File:Sub Strip Board 1.JPG|240px]] | ||
# | # The first page should have just one problem: 18-9= | ||
#:[[File:Sub Strip Board 2.JPG| | #:Take the 9 strip and cover up the numbers starting from the end. The last visible number is the answer. | ||
#:[[File:Sub Strip Board 2.JPG|240px]] [[File:Sub Strip Board 3.JPG|240px]] | |||
# The next page should have two problems: 17-9= and 17-8= | |||
# next | #:Lay the shortest of the plain wooden strips over the number 18 on the board. | ||
#:[[File:Sub Strip Board 4.JPG| | #:[[File:Sub Strip Board 4.JPG|240px]] | ||
# | # Take the 9 strip and cover up the numbers starting from the end. The last visible number is the answer. | ||
#:[[File:Sub Strip Board 5.JPG| | #:[[File:Sub Strip Board 5.JPG|240px]] [[File:Sub Strip Board 6.JPG|240px]] | ||
# Then take the 8 strip and cover up the numbers starting from the end. The last visible number is the answer. | |||
#:[[File:Sub Strip Board 7.JPG|240px]] | |||
# | |||
#:[[File:Sub Strip Board 7.JPG| | |||
# next step | # next step | ||
#:[[File:Sub Strip Board 8.JPG| | #:[[File:Sub Strip Board 8.JPG|240px]] | ||
=== Presentation Two === | === Presentation Two === | ||
# step one | # step one | ||
#:[[File:Sub Strip Board 9.JPG| | #:[[File:Sub Strip Board 9.JPG|240px]] | ||
# next step | # next step | ||
#:[[File:Sub Strip Board 10.JPG| | #:[[File:Sub Strip Board 10.JPG|240px]] | ||
# next step | # next step | ||
#:[[File:Sub Strip Board 11.JPG| | #:[[File:Sub Strip Board 11.JPG|240px]] | ||
# next step | # next step | ||
#:[[File:Sub Strip Board 12.JPG| | #:[[File:Sub Strip Board 12.JPG|240px]] | ||
# next step | # next step | ||
#:[[File:Sub Strip Board 13.JPG| | #:[[File:Sub Strip Board 13.JPG|240px]] | ||
== Points of Interest == | == Points of Interest == | ||
Revision as of 09:48, 12 July 2011
| 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
- Take the material to a mat or table. Lay out as shown.
- 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.
- 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.
- 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
- step one
- next step
- next step
- next step
- next step
Points of Interest
Control of Error
Variations and Extensions
Material
Where to Buy
Hello Wood $59.00 (variation on the traditional material)
