Sunday, April 5, 2009

Fractions involving division.

Since the class has learnt addition, subtraction and multiplication of fractions, there is no reason not to learn division of fractions. Right?
To do division of fractions, it is as simple as multiplying fractions. This means that if the class can manage multiplication of fractions well, they are definitely able to do division of fractions.
Here are some steps to help you remember when attempting division of fractions.
1) Rewrite the problem.
2) Change the division sign to a multiplication sign (important*)
3) "Flip" the 2nd fraction. (If it happens to be a whole number, "add" a "hat" for it. *Class 5-5 should be able to understand what I mean*)
4) Do the problem as a multiplication problem now.
5) Done!

The video below shows you how to do division of fractions involving proper fractions and proper fractions.

For the next lesson, I think I should tell the class or re-teach the division of fractions once more using a funny storyline that I came up with. This is an important concept and I hope that all students are able to understand it completely.

Mr Xie.

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