These whiteboard resources will generate diagrams to illustrate addition and subtraction of fractions.
The subtraction whiteboard resource works in the same way as the addition version.
Here's what you do:
1. To generate a fraction drag the coloured bars to the required height.
Start at the bottom of the fraction strip.
2. When two fractions are generated you are ready to add them together.
3. Click on the lowest common denominator (lcd) button to change the denominator to the lcd. Click again to cancel down the fractions. Click on a fraction button if you want to change to fractions with different denominators.
4.Click on the '+' button to add the fractions together
5. Click on the 'new' button to add different fractions.
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