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龍騰4_1-1課例3
Author:
廖傑成
GeoGebra
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兩位數加法
球體建築師
兩位數除以一位數（二）
異分母分數減法
算柱 (兩位數)
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happy birthday
科博館的水畢氏三角
數學傳播39卷4期, 平面幾何公式思考
銳角、直角和鈍角
夾擠定理 (The Squeeze Theorem)
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Power Functions
Upper and Lower Sum or Riemann Sum
Quadratic Functions
Random Variables
Trigonometric Functions