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Addition of Directed Numbers 有向數的加法
Autor:
現代中學數學 Modern Secondary Mathematics
Thema:
Addition
,
Zahlen
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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