Difference between revisions of "Addition with small number rods"
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(New page: ==Addition with small number rods== === Age === 3-6 <br /> === Materials === <ol><li>Two sets of Small Number Rods.</li><li>Plain squared paper and pencil.</li><li>Addition Sign Cards (opt...) |
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− | === Age | ||
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− | <br | + | 3-6 <br> |
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− | + | === Materials === | |
− | === | ||
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+ | #Two sets of Small Number Rods. | ||
+ | #Plain squared paper and pencil. | ||
+ | #Addition Sign Cards (optional). | ||
− | [[Category:Mathematics]] | + | <br> |
+ | |||
+ | === Preparation === | ||
+ | |||
+ | <br> | ||
+ | |||
+ | === Presentation === | ||
+ | |||
+ | '''Presentation 1:<br>''' | ||
+ | |||
+ | *The Directress invites the child to build two stairs with the number rods. | ||
+ | *The rods on the left act as control of error and the rods on the right are used for addition purpose. | ||
+ | *So, the Directress takes a rod from the left, counts them, for e.g. a rod 7. | ||
+ | *Then she invites the child to choose a rod that is shorter than 7. | ||
+ | *The Directress directs the child to choose from the right set of rods. | ||
+ | *The child chooses a rod, for e.g. a 5 rod. | ||
+ | *Then the Directress places the 5 rod just below the 7 rod, and then says, "how many more to make 7?" | ||
+ | *The child then counts out the number rod to make 7 based on the 7 rod which acts as control of error and would probably answer "2". | ||
+ | *Then the child takes a 2 rod and places it besides the 5 rod below the 7 rod and would find them at equal length. | ||
+ | *Directress then explains, "5 plus 2 makes 7" and then shows the child how to write "5 2=7" on plain square paper. | ||
+ | *The Directress can continue the presentation by showing a few more examples. | ||
+ | |||
+ | <br> | ||
+ | |||
+ | === Control Of Error === | ||
+ | |||
+ | The Rods themselves act as a Control of Error because the quantities are fixed. <br> | ||
+ | |||
+ | === Points Of Interest === | ||
+ | |||
+ | As a preparation to learn Number Bonds, when doing the above exercise, we could always exchange places between the 2 addition rods and reinforce that, for e.g. 5 2=7 and 2 5=7 as well.<br><br>Exercises should not be called 'sums' as in correct mathematical language the 'sum' is the answer to an addition question. We use 'exercise or 'example' instead. <br> | ||
+ | |||
+ | === Purpose === | ||
+ | |||
+ | *Introduce the child to addition with numbers 1 to 10. | ||
+ | *Show the child how to record additions up to 10. | ||
+ | *Provide controlled exercises for teaching number bonds. | ||
+ | |||
+ | <br> | ||
+ | |||
+ | === Variation === | ||
+ | |||
+ | <br> | ||
+ | |||
+ | === Handouts/Attachment === | ||
+ | |||
+ | <br> | ||
+ | |||
+ | [[Category:Mathematics]] [[Category:Mathematics_3-6]] |
Latest revision as of 03:47, 15 October 2009
Contents
Age
3-6
Materials
- Two sets of Small Number Rods.
- Plain squared paper and pencil.
- Addition Sign Cards (optional).
Preparation
Presentation
Presentation 1:
- The Directress invites the child to build two stairs with the number rods.
- The rods on the left act as control of error and the rods on the right are used for addition purpose.
- So, the Directress takes a rod from the left, counts them, for e.g. a rod 7.
- Then she invites the child to choose a rod that is shorter than 7.
- The Directress directs the child to choose from the right set of rods.
- The child chooses a rod, for e.g. a 5 rod.
- Then the Directress places the 5 rod just below the 7 rod, and then says, "how many more to make 7?"
- The child then counts out the number rod to make 7 based on the 7 rod which acts as control of error and would probably answer "2".
- Then the child takes a 2 rod and places it besides the 5 rod below the 7 rod and would find them at equal length.
- Directress then explains, "5 plus 2 makes 7" and then shows the child how to write "5 2=7" on plain square paper.
- The Directress can continue the presentation by showing a few more examples.
Control Of Error
The Rods themselves act as a Control of Error because the quantities are fixed.
Points Of Interest
As a preparation to learn Number Bonds, when doing the above exercise, we could always exchange places between the 2 addition rods and reinforce that, for e.g. 5 2=7 and 2 5=7 as well.
Exercises should not be called 'sums' as in correct mathematical language the 'sum' is the answer to an addition question. We use 'exercise or 'example' instead.
Purpose
- Introduce the child to addition with numbers 1 to 10.
- Show the child how to record additions up to 10.
- Provide controlled exercises for teaching number bonds.
Variation
Handouts/Attachment