Difference between revisions of "Passage from One Square to a non-Succeeding Square"
From wikisori
(New page: === Age === <br> === Materials === <br> === Preparation === <br> === Presentation === <br> === Control Of Error === <br> === Points Of Interest === <br> === Purpose...) |
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| Line 1: | Line 1: | ||
=== Age === | === Age === | ||
| − | <br> | + | 6-9.<br> |
=== Materials === | === Materials === | ||
| − | <br> | + | *Box of colored bead bars 1-10 |
| + | *One each of the squares of 1-10 | ||
| + | *Rubber bands<br> | ||
=== Preparation === | === Preparation === | ||
| − | <br> | + | <br> |
=== Presentation === | === Presentation === | ||
| − | <br> | + | #The directress volunteers to assist in constructing a square of 9 from a square of 5. |
| + | #Directress says: "What is the difference when you take 5 from 9? " | ||
| + | #So, how many more bars of 5 must be added to this side to make 9?" | ||
| + | #Four bars of 5 are added to the right side. | ||
| + | #In the same way 4 5-bars are added to the bottom. | ||
| + | #Again, there is a hole. | ||
| + | #Count the number of beads on the sides of the hole...4 by 4. | ||
| + | #Four 4-bars can be replaced by the square, | ||
| + | #Use the square of 9 to control: | ||
| + | #5 x 5 + 5 x 4 + 5 x 4 + 4 x 4 | ||
| + | #What was added? 25 + 20 + 20 + + 16 = 81 | ||
| + | #9 x 9 = 81<br> | ||
=== Control Of Error === | === Control Of Error === | ||
| − | <br> | + | <br> |
=== Points Of Interest === | === Points Of Interest === | ||
| − | <br> | + | <br> |
=== Purpose === | === Purpose === | ||
| − | <br> | + | <br> |
=== Variation === | === Variation === | ||
| − | <br> | + | <br> |
=== Links === | === Links === | ||
| − | <br> | + | <br> |
=== Handouts/Attachments === | === Handouts/Attachments === | ||
| − | <br> | + | <br> |
[[Category:Mathematics]] | [[Category:Mathematics]] | ||
Revision as of 04:46, 2 July 2009
Contents
Age
6-9.
Materials
- Box of colored bead bars 1-10
- One each of the squares of 1-10
- Rubber bands
Preparation
Presentation
- The directress volunteers to assist in constructing a square of 9 from a square of 5.
- Directress says: "What is the difference when you take 5 from 9? "
- So, how many more bars of 5 must be added to this side to make 9?"
- Four bars of 5 are added to the right side.
- In the same way 4 5-bars are added to the bottom.
- Again, there is a hole.
- Count the number of beads on the sides of the hole...4 by 4.
- Four 4-bars can be replaced by the square,
- Use the square of 9 to control:
- 5 x 5 + 5 x 4 + 5 x 4 + 4 x 4
- What was added? 25 + 20 + 20 + + 16 = 81
- 9 x 9 = 81
Control Of Error
Points Of Interest
Purpose
Variation
Links
Handouts/Attachments
