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Full text of "The Discovery Of The Child"

TEACHING METHODS

69

on the platform of the machine was arranged a small movable
stool 30 cms. high, for measuring the height when seated. Today I
suggest that the machine be made with a double platform; on one
side to measure the full height and on the other the height when seat-
ed. In the second case, the zero is at 30 cms. level, .that is. it
corresponds with the height of the seat, which is fixed. The pointers
running in a groove on the vertical pole are independent of each
other; they can, however, take two measurements at the same
time, that is, they measure two children together. In any case
the inconvenience and the loss of time involved in removing
and putting back the seat and in calculating the difference on
the metric scale is avoided.

Having thus prepared the technique of the research, I arranged
to take measurements, both standing and sitting, every month;
and, in order to bring together the most exact measurements
relative to development and to make the research more regular,
1 made it a rule that the height should be taken on the day on which
the child completed a month of its age.

To secure this, I planned a register as follows:


	September
		October
	
Day of the month
	Height
		Height
	

	Standing
	Seated
	Standing
	Seated

1
	
	
	
	

2
	
	
	
	

3
	
	
	
	

4
	
	
	
	

etc.