三位数乘一位数：灵活面积模型（3D/区域分解）

GeoGebra 命令及参数

1. Random(2, 9) → e_5
2. Random(1, 9) → w
3. Random(0, 9) → v
4. Random(1, 9) → u
5. Random(1, 9) → a_1
6. Random(0, 9) → w_1
7. Random(0, 9) → b_2
8. Point(yAxis) → D
9. Point(yAxis) → L
10. Random(1, 9) → o_{3}
11. Random(1, 9) → b_1
12. Textfield(d_1) → a
13. Textfield(m_1) → b
14. Textfield(ansguess) → r
15. If(n_1 ≟ v, "√", "X") → text3
16. If(ansguess ≟ produc, "☺", "☹ ") → text7
17. Segment(D, K) → p_{3}
18. Vector(L, D) → c_{3}
19. Translate(D, c_{3}) → D'
20. Translate(J, c_{3}) → J'
21. Translate(K, c_{3}) → K'
22. Vector(D, J) → i
23. Translate(K, i) → K'_{1}
24. Translate(K', i) → K''
25. Segment(D', K'') → j_{5}
26. Segment(K, K'_{1}) → i_1
27. Segment(K', K) → h_2
28. Segment(J', J) → i_2
29. Segment(D', D) → k_2
30. Textfield(c_2) → h
31. Textfield(e_2) → j
32. Textfield(n_2) → k
33. Textfield(r_2) → c
34. If(toptrue, "√", "X") → text2
35. Polygon(D, J, J', D') → q3, d_3, j_3, j', d'
36. Polygon(J, K, K', J') → q4, j_4, k_3, k', s_2
37. Polygon(K, K'_{1}, K'', K') → q7, k_4, k'_{1}, k'', t_2
38. Segment(K'', K'_{1}) → m_{3}