Multiplication of Directed Numbers 有向數的乘法

Autore:現代中學數學 Modern Secondary Mathematics

Explore the rule of multiplication of directed numbers through changes in temperature. (for use with the Class Activities on P.2.33 and P.2.34 of Book 1A) 透過温度的變化，探究有向數乘法的計算法則。 (1A 冊第 2.33 及 2.34 頁的課堂活動適用)

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bewijs stelling van Pythagoras
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montecarlo circles 5
Billard V5.2 and V6
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The Cosecant and the Unit Circle
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Αναλύοντας ένα κλάσμα μικρότερο της μονάδας σε γινόμενο δύο κλασμάτων
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