面积模型演示四位数乘三位数的分块乘法

GeoGebra 命令及参数

1. Random(1, 9) → w
2. Random(0, 9) → v
3. Random(1, 9) → u_{4}
4. Random(0, 9) → v_3
5. Intersect(xAxis, yAxis) → A
6. Random(1, 9) → a_1
7. Random(0, 9) → w_1
8. Random(0, 9) → b_2
9. Point(yAxis) → D
10. Point(xAxis) → E
11. Point(xAxis) → F
12. Point(yAxis) → L
13. Polygon(A, E, G, L) → q1, a_{2}, e, g_{4}, l_{2}
14. Polygon(E, F, H, G) → q2, e_1, f_{2}, h_{4}, g_1
15. Polygon(G, H, K, J) → q5, g_2, h_3, k_1, j_{2}
16. Polygon(L, G, J, D) → q6, l_1, g_3, j_1, d_{2}
17. Segment(D, A) → q_{3}
18. Segment(J, E) → s_{4}
19. Segment(K, F) → t_{4}
20. Random(1, 9) → o_{3}
21. Random(1, 9) → b_1
22. Textfield(d_1) → a
23. Textfield(m_1) → b
24. Textfield(t_1) → g
25. Textfield(u_1) → h
26. Textfield(o_1) → m
27. Textfield(p_1) → n
28. Textfield(r_1) → q
29. Textfield(s_1) → r
30. Textfield(ansguess) → u
31. If(n_1 ≟ v, "√", "X") → text3
32. If(ansguess ≟ produc, "☺", "☹ ") → text7
33. Segment(L, H) → r_{3}
34. Segment(A, F) → m_{2}
35. Segment(D, K) → p_{3}
36. Vector(L, D) → c_{3}
37. Translate(D, c_{3}) → D'
38. Translate(J, c_{3}) → J'
39. Translate(K, c_{3}) → K'
40. Vector(D, J) → i_{5}
41. Translate(H, i_{5}) → H'
42. Translate(K, i_{5}) → K'_{1}
43. Translate(F, i_{5}) → F'
44. Translate(K', i_{5}) → K''
45. Segment(D', K'') → j_{5}
46. Segment(K'', F') → m_{3}
47. Segment(F', F) → f_1
48. Segment(H, H') → h_1
49. Segment(K, K'_{1}) → i_1
50. Segment(K', K) → h_2
51. Segment(J', J) → i_2
52. Segment(D', D) → k_2
53. Textfield(c_2) → i
54. Textfield(e_2) → j
55. Textfield(n_2) → k
56. Textfield(o_2) → o
57. Textfield(p_2) → s
58. Textfield(q_2) → f
59. Textfield(r_2) → c
60. If(sidetrue, "√", "X") → text5
61. If(toptrue, "√", "X") → text2
62. Polygon(D, J, J', D') → q3, d_3, j_3, j', d'
63. Polygon(J, K, K', J') → q4, j_4, k_3, k', s_2
64. Polygon(K, K'_{1}, K'', K') → q7, k_4, k'_{1}, k'', t_2
65. Polygon(H, H', K'_{1}, K) → q8, h_5, h', f_3, k_5
66. Polygon(F, F', H', H) → q9, f_4, f', i_3, h_6
67. Translate(F', i_{5}) → F''
68. Translate(H', i_{5}) → H''
69. Translate(K'_{1}, i_{5}) → B
70. Translate(K'', i_{5}) → K'''
71. Segment(K'', K''') → l_3
72. Segment(K''', B) → n_3
73. Segment(B, K'_{1}) → s_3
74. Segment(H', H'') → t_3
75. Segment(H'', B) → a_3
76. Segment(F', F'') → b_3
77. Segment(F'', H'') → e_3
78. Textfield(u_2) → d
79. Textfield(v_2) → l
80. Textfield(w_2) → p
81. Textfield(u_3) → t
82. Polygon(K'_{1}, B, K''', K'') → q10, i_4, b_4, k''', l_4
83. Polygon(H', H'', B, K'_{1}) → q11, m_4, h'', b_5, n_4
84. Polygon(F', F'', H'', H') → q12, p_4, f'', q_4, r_4