Chapter 7 The Study Of Numbers Up To 20

4 × 3 = 12 12 = 4 × 3 How many 3’s in 12?

12 – (4 × 3) = 0 12 – 3 – 3 – 3 – 3 = 0

Some pupils may also see such relationships as 12 – 3 = 3× 3 12 – ( × 2) = 9

( × 2) + (2 × 3) = 12 6 = 12 – ( × 12)

Occasionally some readings could be written on the blackboard as they are read out but these should be erased before the pupils are asked to write down as many expressions as they can see in the pattern. 2 Make a train of four light green rods. How many pink rods will fit this train? Read what you can see in the pattern. Write it down. (4 × 3 = 3 × 4 or 3 × 4 = 4 × 3) What is the product of 4 and 3? of 3 and 4? What are the factors of 12? 3 Make a rectangle of four light green rods side by side. Now make a rectangle of three pink rods side by side.

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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