It was in fact easier to teach under the old regime. Each category of math-addition, multiplication, fractions, and so on-was taught in a separate chapter and then never touched upon again. But students often forgot the old stuff as fast as they learned the new. "The new curriculum is spiral, and each new lesson incorporates concepts learned earlier, only at a deeper level."
舊課本很容易教，加減乘除四則運算、小數、分數都分別設計成一個單元，但學生往往學了新的、丟了舊的，五上教完分數乘法，放寒假回來就忘了，「新課程編排呈小螺旋狀，新單元也會複習以前的原則，但程度加深。」