He learns multiplication tables up to 100X100. He devises and uses aquot;short cuts.aquot; Multiplication is probably used as the fundamental operation. Drill is the means for improving arithmetical ability, in so far as speed and accuracy of calculationanbsp;...

Title | : | Pharmacotherapy of depression |

Author | : | American College of Neuropsychopharmacology |

Publisher | : | - 1966 |

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