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Indiana University Studies 



terns. Second, a careful teacher or group of teachers could keep 

 accurate data on the entire school time devoted to arithmetic in 

 case of a particular school group. Accurate data in terms of 

 minutes per day devoted to any and every arithmetical process 

 sliould be kept and the progress of the children should be measured 

 from time to time. 



The data derived from one of these methods would serve as a 

 check on the data gained by the other. By the use of both we 

 should be able to determine with a high degree of assurance what 

 the optimal time for every part of the work should be. 



