THE TEACHING OF NUMERATION 339
the 1 of the ten, in that of the right there follow all
10 the figures from zero to nine.
In card B the operations are more complex. The
3Q cards bearing the figures are successively superposed and
substituted in order of numerical progression on each
40 c ten'. After the nine, it Is necessary to pass to the
succeeding ten, and so one goes on to the end which is
given at the 100.
Almost all our children count up to 100, a number
which was given to them as a reward for the curiosity
which they showed about it.
90 I do not think that such teaching requires further