分数乘法可视化演示 by Gareth Daniels

GeoGebra 命令及参数

1. Polygon(F, D, C, A) → poly2, f_1, d_1, c_1, a_2
2. Sequence((0, i), i, 1, floor(a / b)) → list1
3. Sequence((x(C), i), i, 1, floor(a / b)) → list2
4. Sequence(Segment[Element[list1, i], Element[list2, i]], i, 1, a - 1) → list3
5. Sequence((i / d, 0), i, 1, x(C) * d - 1) → list4
6. Sequence((i / d, ceil(a / b)), i, 1, x(C) * d - 1) → list5
7. Sequence(Segment[Element[list4, i], Element[list5, i]], i, 1, d * d_2) → list6
8. Segment(E, B) → g
9. Polygon(G, H, I, J) → poly3, g_1, h, i, j
10. Segment(G, H) → k
11. Segment(H, I) → l
12. Segment(I, K) → m
13. Segment(K, G) → n
14. Sequence((i, 0), i, 1, floor(c / d)) → list7
15. Sequence((i, ceil(a / b)), i, 1, floor(c / d)) → list8
16. Sequence(Segment[Element[list7, i], Element[list8, i]], i, 1, floor(c / d)) → list9
17. Sequence((0, i / b), i, 1, ceil(a / b) * b - 1) → list10
18. Sequence((x(C), i / b), i, 1, ceil(a / b) * b - 1) → list11
19. Sequence(Segment[Element[list10, i], Element[list11, i]], i, 1, ceil(a / b) * b - 1) → list12
20. Polygon(L, M, N, O) → poly1, l_1, m_1, n_1, o