This is an area of confusion for a lot of students. Fractions are old school mathematics and require some pretty powerful head space. Unless you have a calculator (then it's easy)... you guys are allowed calculators.
Here is the logic behind fractions...
Fractions are things that confuse heaps of students... lots get through without ever really knowing what they're all about. I always think about fractions with my stomach. I think of bars of chocolate (cause they're rectangles) or cakes (cause they're round).
The key things you need to know is that they're parts of wholes. They lie between the numbers on a number line...They don't always have to be between 0 and one (e.g. you can have 'three and a half'.
Class activity - competition to see where a fraction of a line is on the whiteboard (some rewards up for grabs).
Equivalent Fractions -
here is the link
This is when the fraction shows the same amount of a fraction but looks different. This is an interactive teacher led animation. You can see how the fractions are the equal (balanced) but have different numbers top/bottom. Other good learning here is the decimal on the bottom - you can use a calculator to find this (use the divided by button).
Here is the button on the calculator for fractions...
Can use see the grey button under the "Abs" button. That's for fractions.
Try some of these...
1. What is one fifth of 730?
2. What is nine tenths of 860?
3. What is five twelfths of 288?
4. Increase 50 by one quarter.
5. Increase 180 by two thirds.
6. Decrease 360 by one tenth.
7. Decrease 440 by three fourths.
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