Difference between revisions of "Bead Bars: Sums greater than Ten"
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> | + | 4-6<br> |
=== Materials === | === Materials === | ||
| − | <br> | + | *Ten bars |
| + | *Colored bead bars | ||
| + | *Box of signs for operations<br> | ||
=== Preparation === | === Preparation === | ||
| − | <br> | + | Command cards may be made.<br> |
=== Presentation === | === Presentation === | ||
| − | <br> | + | #The child combines two or more numbers, whose sum will be greater than ten. |
| + | #The colored bead bar is placed below the ten bar to facilitate counting. | ||
| + | #For example:A child chooses 14 and 12 in beads to add. | ||
| + | #Tell the child to add the units first and then the tens to achieve the sum: 4 + 2 = 6 and 2 tens are twenty. The sum is 26. | ||
| + | #The child chooses 18 + 25 in beads. Again units are added first. Since that sum is 13. Place a three bar below and carry the one ten mentally. Carrying the one ten add the other tens. The sum is 4 tens and the total sum is 43. | ||
| + | |||
| + | <br> | ||
=== Control Of Error === | === Control Of Error === | ||
| − | <br> | + | The chart.<br> |
=== Points Of Interest === | === Points Of Interest === | ||
| − | <br> | + | <br> |
=== Purpose === | === Purpose === | ||
| − | <br> | + | *To give a child experience with horizontal as well as vertical addition.<br> |
=== Variation === | === Variation === | ||
| − | <br> | + | <br> |
=== Links === | === Links === | ||
| − | <br> | + | <br> |
=== Handouts/Attachments === | === Handouts/Attachments === | ||
| − | <br> | + | <br> |
[[Category:Mathematics]] | [[Category:Mathematics]] | ||
Revision as of 04:42, 25 June 2009
Contents
Age
4-6
Materials
- Ten bars
- Colored bead bars
- Box of signs for operations
Preparation
Command cards may be made.
Presentation
- The child combines two or more numbers, whose sum will be greater than ten.
- The colored bead bar is placed below the ten bar to facilitate counting.
- For example:A child chooses 14 and 12 in beads to add.
- Tell the child to add the units first and then the tens to achieve the sum: 4 + 2 = 6 and 2 tens are twenty. The sum is 26.
- The child chooses 18 + 25 in beads. Again units are added first. Since that sum is 13. Place a three bar below and carry the one ten mentally. Carrying the one ten add the other tens. The sum is 4 tens and the total sum is 43.
Control Of Error
The chart.
Points Of Interest
Purpose
- To give a child experience with horizontal as well as vertical addition.
Variation
Links
Handouts/Attachments
