Chapter 7 The Study Of Numbers Up To 20

2 × 6 = 12 12 = 2 × 6 How many 2’s in 12? How many 6’s in 12?

× 12 = 2 × 12 = 6 12 – (4 × 3) = 0

5 The final step is to find the color symbol for 12 on the wallchart and among the product cards; this will be described later. At the end of this stage pupils should have an understanding of eleven of the basic products up to 100, that is 4, 6, 8, 9, 10, 12, 14, 15, 16, 18 and 20. Discovering odd and even numbers Which of the lengths from 1 to 20 (using the white rod as the unit) can be made with red rods only? Try the orange; the black; the orange and yellow end to end. Find out all the lengths which can be made up of red rods. Write them down. These are called even numbers. Those which cannot be made up of red rods are called odd numbers. Make a staircase showing the even numbers up to 20. Read them going up and then down.

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The Cuisenaire Gattegno method of teaching Mathematics

The Cuisenaire Gattegno method of teaching Mathematics

The Cuisenaire Gattegno method of teaching Mathematics

The Cuisenaire Gattegno method of teaching Mathematics