Over the course of the 1970s, handheld electronic calculators transformed the way tens of millions of people did arithmetic. Engineers abandoned slide rules, business people gave up desktop ...
Trigonometry and calculus often trouble board exam students due to heavy formulas and poor conceptual clarity. A board examiner explains how concept mapping helps students visually connect ideas, ...
The series is edited by the head coaches of China's IMO National Team. Each volume, catering to different grades, is contributed by the senior coaches of the IMO National Team. The Chinese edition has ...
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