A fraction wall is built using fractions belonging to the same 'family'. The wall is built so halves, quarters and eighths are one family, thirds and sixths are another, and fifths and tenths make up a third family. The children then use a number of shapes to put a set of fractions in order, with the biggest at the bottom and the smallest at the top.
- This clip is from:
- First broadcast:
- 13 September 2007
There are lots of opportunities to stop the clip and ask questions about the fractions wall. The most useful are probably at one minutes 26 seconds when the completed fraction wall is visible. Stopping the clip at two minutes 7 seconds allows for a discussion of the relative size of unit fractions. Ask the children to use the image to write down three ‘greater than’ statements, eg 1/2 > 1/3. They could then be asked to complete this sentence ‘I am thinking of two unitary fractions. How do I decide which is greater?’ This should expose a potential misconception and lead to a powerful general statement. This could be followed by some ‘would you rather...’ statements to place this in context, for example, 'would you rather have half a bar of chocolate or a quarter of a bar of chocolate?'