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四、加与减

Author:玖数

New Resources

  • 柱體建築師
  • 兩組對邊相等的四邊形
  • 找出對稱軸
  • 兩位數除以一位數(一)
  • 拼砌四邊形

Discover Resources

  • 乘法表的自动练习
  • 平移動畫(平移加滑桿)
  • Drag the red dots, see the area ratio of EHFG to ABCD
  • 七巧板
  • 直線的斜率:水平變化 & 鉛垂變化

Discover Topics

  • Straight Lines
  • Multiplication
  • Geometry
  • Expected Value
  • Sine
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