Active Fractions and Decimals: Whiteboard Resources

Subtracting Fractions 1
1 is the highest number which can be used.

Subtracting Fractions 2
2 is the highest number which can be used.

These whiteboard resources will generate diagrams to illustrate addition and subtraction of fractions.
$Addition of fractions$

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.	$Two fractions ready to be added$
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.		$New fractions button$