扩展与约简分数转换为小数

扩展与约简分数转换为小数
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2022-09-22 15:37
①本范例演示如何通过扩展与约简分数将其转换为小数形式;②涉及的核心数学概念包括分数的扩展与约简、小数表示、分数与小数的关系;③作图要点——从下方『构造摘要』提炼用到了哪些 GeoGebra 命令/对象:If, SpeechBubbleRight, Polygon, IsInRegion, Corner, SpeechBubbleLeft, Textfield, Segment, SelectedIndex, CircleArc, Point, Vector;④适合的学段或用途:本范例适合小学5-6年级学生,用于理解和掌握分数的扩展与约简以及分数与小数的转换,通过可视化帮助理解抽象概念。

GeoGebra 命令及参数

  1. If(move ≟ 5, bInput ≟ solB(1), If[move ≟ 7, bInput ≟ solB(2), If[move ≟ 9, bInput ≟ solB(3), If[move ≟ 11, bInput ≟ solB(4), bInput ≟ solB(5)]]]) → c5
  2. If(move ≟ 4 ∨ move ≟ 5, aInput ≟ solA(1), If[move ≟ 6 ∨ move ≟ 7, aInput ≟ solA(2), If[move ≟ 8 ∨ move ≟ 9, aInput ≟ solA(3), If[move ≟ 10 ∨ move ≟ 11, aInput ≟ solA(4), If[move ≟ 12 ∨ move ≟ 13, aInput ≟ solA(5)]]]]) → c4
  3. SpeechBubbleRight(C, 7.7, 2) → poly1
  4. Polygon(D, E, F, G) → box1, d, e, f, g
  5. Polygon(H, I, J, K) → box2, h, i, j, k
  6. Polygon(L, M, N, O) → box3, l, m, n, o
  7. IsInRegion(Point1, box1) → c1
  8. IsInRegion(Point2, box2) → c2
  9. IsInRegion(Point3, box3) → c3
  10. Corner(text5, 4) → S
  11. Corner(text5, 1) → T
  12. Corner(text5, 2) → U
  13. Corner(text5, 3) → V
  14. Polygon(S, T, U, V) → umrand1, s, t, u, v
  15. Corner(text6, 4) → W
  16. Corner(text6, 3) → Z
  17. Corner(text6, 2) → A_1
  18. Corner(text6, 1) → B_1
  19. Polygon(W, Z, A_1, B_1) → umrand2, w, z_1, a_1, b_1
  20. Corner(text7, 4) → C_1
  21. Corner(text7, 3) → D_1
  22. Corner(text7, 2) → E_1
  23. Corner(text7, 1) → F_1
  24. Polygon(C_1, F_1, E_1, D_1) → umrand3, c_1, f_1, e_1, d_1
  25. SpeechBubbleRight(I_1, 5.5, 2) → poly2
  26. SpeechBubbleLeft(L_1, 7.3, 1) → poly3
  27. Textfield(aInput) → InputBox1
  28. Segment(M_1, N_1) → p
  29. SpeechBubbleLeft(L_1, 10.2, 1.3) → poly4
  30. Textfield(bInput) → InputBox2
  31. SpeechBubbleLeft(L_1, 6.5, 1) → poly5
  32. SpeechBubbleLeft(O_1, 7.3, 1.5) → poly6
  33. Textfield(cInput) → InputBox3
  34. Textfield(dInput) → InputBox4
  35. SpeechBubbleLeft(R_1, 11, 2.3) → poly7
  36. SelectedIndex(l1) → index1
  37. SelectedIndex(l2) → index2
  38. SelectedIndex(l3) → index3
  39. SpeechBubbleRight(I_2, 10.8, 1.1) → poly8
  40. SpeechBubbleRight(I_2, 9.5, 1.1) → poly9
  41. Corner(text39, 1) → J_2
  42. Corner(text39, 2) → K_2
  43. Corner(text39, 3) → L_2
  44. Corner(text39, 4) → M_2
  45. Polygon(J_2, K_2, L_2, M_2) → umrand4, j_2, k_2, l_2, m_2
  46. Corner(text40, 1) → N_2
  47. Corner(text40, 2) → O_2
  48. Corner(text40, 3) → P_2
  49. Corner(text40, 4) → Q_2
  50. Polygon(N_2, O_2, P_2, Q_2) → umrand5, n_2, o_2, p_2, q_2
  51. Corner(text41, 1) → R_2
  52. Corner(text41, 2) → S_2
  53. Corner(text41, 3) → T_2
  54. Corner(text41, 4) → U_2
  55. Polygon(S_2, T_2, U_2, R_2) → umrand6, s_2, t_2, u_2, r_2
  56. IsInRegion(Point1_2, box1) → c7
  57. IsInRegion(Point2_2, box2) → c8
  58. IsInRegion(Point3_2, box3) → c9
  59. CircleArc(V_2, W_2, Z_2) → c
  60. Point(c) → A_3
  61. Vector(A_3, B_3) → a
  62. Textfield(eInput) → InputBox5
  63. Textfield(fInput) → InputBox6
  64. CircleArc(C_3, D_3, E_3) → q
  65. Point(q) → F_3
  66. Vector(F_3, G_3) → b
  67. Segment(M_1 - (0.1, 0), N_1 + (0.1, 0)) → p_1

AI 绘图提示语参考

画一个包含五个方框的图形,每个方框内有一个文本提示。第一个方框显示“将分数转换为小数”,第二个方框显示“扩展分数”,第三个方框显示“简化分数”,第四个方框显示“分数与小数的关系”,第五个方框显示“练习题”。每个方框由四个角点组成,角点之间用线段连接。每个方框内还有相应的文本提示,提示用户如何进行分数和小数的转换。
以上提示语为根据原始绘图命令整理而来,仅供参考。