Addition of Directed Numbers 有向數的加法

Autor:現代中學數學 Modern Secondary Mathematics

Explore the rules of the addition of directed numbers by using a number line. (Bilingual version. Supports both English and Chinese.) 利用數線，探究有向數加法的計算法則。 (雙語版，支援中文和英文)

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bewijs stelling van Pythagoras
Untitled
函數的單調性
Visualizing the Pythagorean Identity with Sine and Cosine
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Trial88
Omdrejningslegeme III
Lesson 5.3 - Inv. 1
Trasformazioni della funzione y=senx (1)

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Operaciones Aritméticas
Geometría
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Aritmética
Matrices