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Teaching Fractions With Understanding: Part-Whole Concept
Written for teachers, this article describes four basic approaches children use in understanding fractions as equal parts of a whole.
An article describing activities which will help develop young children's concept of fractions.
This article, written for primary teachers, links to rich tasks which will help develop the underlying concepts associated with fractions and offers some suggestions for models and images that help support ideas around fractions.
The harmonic triangle is built from fractions with unit numerators using a rule very similar to Pascal's triangle.