Children\'s Mathematics

(Ann) #1
Mathematical graphics are more diverse, not only because children are not
moving towards common forms of a written language such as English or Greek, but
because the different mathematical genres often suggest quite different graphical
approaches. In early written addition, for example, children usually begin with con-
tinuous counting before separating sets (see Chapter 7). In representing data, young
children may use pictures and ticks and gradually move towards increasingly stan-
dard layouts (see Chapter 8).
However, before we analysed children’s own written methods of calculations we
needed to focus on the range of different, graphical marks children choose, and the
evolution of these early marks: (for an overview of the development of children’s
mathematical graphics, see Figure 7.13 in Chapter 7).

Common forms of graphical marks
In analysing our examples of children’s marks and written methods we have identi-
fied five common forms of graphics, including three of Hughes’s categories:

• Conclusion



  • pictographic

  • iconic

  • written

  • symbolic.


Dynamic


We use this term to describe marks that are lively and suggestive of action. Such graphics
are ‘characterised by change or activity (and) full of energy and new ideas’ (Pearsall, 1999).
We categorised Charlotte’s ‘hundred and pounds’ (Figure 6.7) and Amelie’s dice game
(Figure 10.3 in Chapter 10) in this way. Both pieces have a freshness and spontaneity.

Pictographic
We have used Hughes’s definition, ‘that the children should be trying to represent
something of the appearance of what was in front of them’ (Hughes, 1986, p. 57).
For example, in Figure 6.9 Karl was representing the tables that he had just counted
in the classroom. In another example, Britney drew the strawberries that were on a
plate in front of her, and which she subsequently ate (see Figure 7.6).

Iconic


These marks are based on one mark for one item when counting. Children whose
marks are iconic use ‘discrete marks of their own devising’ (Hughes, 1986, p. 58). This
can often be reflected in the popular use of vertical strokes as tallies that is taught in
many schools, although to tally is to keep a score of something and need not dictate
only one way. However, when children choose ‘marks of their own devising’ we find

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