面积模型演示三位数乘二位数的构造

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(xAxis) → B
3. Point(yAxis) → D
4. Point(xAxis) → E
5. Point(xAxis) → F
6. Point(yAxis) → L
7. Polygon(A, E, G, L) → q1, a_{2}, e, g_{4}, l_{2}
8. Polygon(E, F, H, G) → q2, e_1, f_{2}, h_{4}, g_1
9. Polygon(F, B, I, H) → q3, f_1, b_{2}, i, h_1
10. Polygon(H, I, C, K) → q4, h_2, i_1, c_{2}, k_{2}
11. Polygon(G, H, K, J) → q5, g_2, h_3, k_1, j_{2}
12. Polygon(L, G, J, D) → q6, l_1, g_3, j_1, d_{2}
13. Segment(A, B) → m_{2}
14. Segment(B, C) → n_{2}
15. Segment(C, D) → p
16. Segment(D, A) → q
17. Segment(L, I) → r
18. Segment(J, E) → s
19. Segment(K, F) → t
20. Random(1, 9) → o
21. Random(1, 9) → u
22. Random(1, 9) → v
23. Random(1, 9) → w
24. Random(1, 9) → a_1
25. Random(1, 9) → b_1
26. Textfield(d_1) → a
27. Textfield(m_1) → b
28. Textfield(n_1) → c
29. Textfield(t_1) → d
30. Textfield(u_1) → f
31. Textfield(o_1) → g
32. Textfield(p_1) → h
33. Textfield(q_1) → j
34. Textfield(r_1) → k
35. Textfield(s_1) → l
36. Textfield(ansguess) → n
37. If(d_1 ≟ (100 * o), "√", "X") → text1
38. If(m_1 ≟ (10 * u), "√", "X") → text2
39. If(n_1 ≟ v, "√", "X") → text3
40. If(t_1 ≟ (10 * w), "√", "X") → text4
41. If(u_1 ≟ a_1, "√", "X") → text5
42. Textfield(v_1) → m
43. If(ansguess ≟ produc, "☺", "☹ ") → text7