A Practical Business Arithmetic, for Common Schools and Academies: Including a Great Variety of Promiscuous Examples (Classic Reprint). Questo articolo non è disponibile.A Practical Business Arithmetic, for Common Schools and Academies: Including a Great Variety of Promiscuous Examples (Classic Reprint)

Excerpt from A Practical Business Arithmetic, for Common Schools and Academies: Including a Great Variety of Promiscuous Examples

Pupils should be required to explain fully the examples in arith metic, at least enough of them to show that they thoroughly under stand them. At first, they will need to use the blackboard or their slates, but they should also learn to give the explanations mentally, omitting the numbers if too large to be thus calculated, but naming them at each step as they proceed. If they can do this beforehand, they need not be required to perform Operations with which they are already perfectly familiar. In this way they will study mental as well as written arithmetic.

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