分数操作

分数操作
几何画板及绘图内容加载中,请稍等……
2017-01-19 17:52
这个范例演示了分数的基本操作,包括加减乘除。它涉及的核心数学概念是分数的算术运算。通过使用GeoGebra命令如Segment, Ray, Point, Sequence等,可以构建分数的加减乘除操作。适合小学高年级和初中学生学习分数运算。

GeoGebra 命令及参数

  1. Segment(A, B) → a_1
  2. Segment(B, C) → b_1
  3. Segment(C, D) → c_1
  4. Segment(D, A) → d_1
  5. Ray(D, C) → e
  6. Point(e) → E
  7. Segment(E, F) → e_1
  8. Segment(F, G) → f_1
  9. Segment(G, H) → g_1
  10. Segment(H, E) → h_1
  11. Sequence(A + t * (B - A), t, 0, 1, 1 / b) → L1
  12. Sequence(D + t * (C - D), t, 0, 1, 1 / b) → L2
  13. Sequence(H + t * (G - H), t, 0, 1, 1 / d) → L3
  14. Sequence(E + t * (F - E), t, 0, 1, 1 / d) → L4
  15. Sequence(Segment[Element[L1, k], Element[L2, k]], k, 2, b) → L5
  16. Sequence(Segment[Element[L3, k], Element[L4, k]], k, 2, d) → L6
  17. Element(L1, a + 1) → T1
  18. Element(L2, a + 1) → T2
  19. Polygon(A, T1, T2, D) → poly1, a_2, t1, t2, d_2
  20. Element(L3, c + 1) → T3
  21. Element(L4, c + 1) → T4
  22. Polygon(E, T4, T3, H) → poly2, e_2, t4, t3, h_2