PDF (Acrobat) Document File
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This pdf file illustrates how to show factors of a number in a set and how to use sets to simplify GCD and LCM. The intersection of the sets shows GCD and the union of them shows LCM. In this way learners are able to understand the relation between prime numbers, composite numbers, factors, GCD and LCM. The first 8 pages give the examples in visual representation with their factors and the following 12 pages are of the same pattern except that they do not contain any factors. They can be used for practicing purposes. They can also be laminated and used as posters.