The Cuisenaire Gattegno Method Chapter 6 Of Teaching Mathematics Teaching The Basic Concepts Of A Fraction
Or he can be asked to discover which of a pair of expressions is the bigger (or the smaller), for instance: × 8 and × 10. When the child is capable of such activities it can safely be assumed that he knows how to use fractions in his problems.
Equivalence Of Fractions Gattegno in his books gives great importance to the concept of equivalence of fractions. Indeed, this concept forms the basis of his treatment of fractions with the Cuisenaire rods. The idea may be introduced to the class as follows: Show me
of the dark green rod (a white rod is produced).
Show me end).
of the dark green rod (two white rods end to
Can you replace these two rods with a single one equivalent to them? (this would be a red rod). If the red rod is now taken as the unit, can you show me dark green rod? (this would again be the red rod).
From this point it is only a short step for the child to realize that is equivalent to , or equivalent to .
Published on Nov 18, 2009