有教過入banding既中一生就知,部份學生係以為ab =/= ba 的,所以當教拆括號(a+b)(a+b)時,部份學生會寫a^2 + ab + ba + b^2, 而唔會將ab + ba 合併為2ab. 另外,simplify albegra時,如y+y+y,佢哋會寫 y3 or (y x 3)而唔係3y。花左好多時間都未必矯正到佢哋呢個小學既問題。
風滿樓2020-11-01 09:47:48
低banding...
TSM_Beardsen2020-11-01 10:31:56
聰明人先明白既野迫個小學生跟
荷蘭豆腐花2020-11-01 10:32:05
“An even number is an integer that can be divided by two and remain an integer or has no remainder."