- may not know how to use their previous strategies
- are unable to make approximations (do not have a feel for larger numbers)
- cannot manipulate several steps.
Children should be continuously handling larger numbers that they may not be
confident in but find challenging. This is the reason they need to write down their
calculation, since it is too large to deal with mentally.
In the concluding chapter of his book, Hughes suggests that ‘work could be done
with children’s own representations of addition and subtraction before introducing
them to the conventional plus and minus signs’ (Hughes, 1986, p. 177). This could
be misleading, like suggesting that in supporting children’s early writing teachers
William, 6:2 (above), has shown his confidence in these addition calculations by
challenging himself with larger numbers (Figure 7.9). He used a combination of
known facts (number bonds for numbers to ten) and counting continuously,
although he was confused with adding larger numbers of ‘8 + 22’ and then ‘11 +
8’. Once again the operator ‘+’ and the equals sign are implied.William was
obviously very interested and wanted to know how to calculate larger numbers,
so this was a real chance for me to explore these calculations with the whole
class.
124 Children’s Mathematics
Figure 7.9a Jax Figure 7.9b Peter
Figure 7.9c William Figure 7.9d Mary
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