Multiplication. It is of two kinds. 1st class should scarcely require any special explanation. How to teach the second class. ... When the subtrahend and minuend both consist of significant figures, and are of the same length, the questions are too easy. ... where the multiplier is any number from 1 to 12 inclusive (the multiplication table in ordinary use not extending farther) ; and, (2) all other questions.
|Title||:||A manual of method and organization|
|Author||:||Robert Robinson (inspector of national sch, Ireland.)|