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. 60 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 illustrations.