Thursday, 29 January 2015

NUMBER RODS

A.BASHEER AHMED, Principal, DIET, RANIPET
D.IYAPPAN, Lecturer, DIET, RANIPET

 INTRODUCING PART I

Introducing numbers to the kids is slightly difficult. A small square board of side 25 cms with a wooden frame around it, is used to introduce numbers and basic operators in Mathematics at the Primary Level.
          The frame around the board acts as a stand to hold the NUMBER RODS.
          There are ten rods in this kit to facilitate the basic operations in Mathematics.
Rod 01:
It is a red cube of Side 2.5cms. It represents 1 unit.
Placing the Rod 01 in the Number Rod Board is given in Diagram 01.

Diagram 01:
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NUMBER RODS BOARD
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10
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NUMBER RODS BOARD
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Rod 02:
It is a cuboid made up of two cubes of side 2.5 cms each placed one over the other. It means that, two units are joined one above the other. two cubes one is red and the other is blue.
In this rod red unit represents 1 and the blue unit represents 2. So, while keeping this rod on the board the red unit should be placed at the bottom, frame which acts as a stand.
Placing the Rod 02 in the Number Rod Board is given in Diagram 02.

Diagram 02:

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NUMBER RODS BOARD
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10
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1
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â
NUMBER RODS BOARD
á


 Rod 03:
          It is a cuboid consisting of one blue unit fixed with two red units on top and bottom. There is no problem in placing this rod on stand, because both the ends are made up of red units.
Placing the Rod 03 in the Number Rod Board is given in Diagram 03.

Diagram 03:

â
NUMBER RODS BOARD
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10
10
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1
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â
NUMBER RODS BOARD
á



Rod 04:
          It consists of 4 units. Of which 2 are red and 2 are blue. They are alter natively placed one over the other. The red end of this rod is to be placed on the stand during operation.
Placing the Rod 04 in the Number Rod Board is given in Diagram 04.

Diagram 04:

â
NUMBER RODS BOARD
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10
10
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9
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1
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â
NUMBER RODS BOARD
á


Rod 05:
It consists of 5 units fastened one over the other. Units 1, 3, and 5 are red and units 2 and 4 are blue. There is no problem in placing this rod on stand, because both the ends are made up of red units.
Placing the Rod 05 in the Number Rod Board is given in Diagram 05.

â
NUMBER RODS BOARD
á
10
10
10
10
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9
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1
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â
NUMBER RODS BOARD
á
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