Tuesday 12 August 2014

Unit of a fraction

What is a unit fraction?


A fraction where the numerator (the top number) is one.


How do fractions relate to division?


The bar (vinculum) means “divided by”.
If you look at the division symbol and a fraction, the dots represent numbers in a fraction.
Part of a family of facts:
5x2=10 10 divided by 2 = 5 ½ of 10 = 5


If you know your basic facts, then finding fractions is easy.


How did knowing Unit Fractions help us with the problem?
The red, blue and black counters - we had to find the unit fraction to know how many of each.

We are learning about unit fractions of a set.
One thing that worked for me was:
- knowing the bar means divided by
- knowing my basic facts
- turning a fraction into a division


One thing that was tricky for me was:
- when the numbers are big and I don’t know the basic facts that go with them
- division facts are hard

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