分数乘法可视化：用正方形网格演示分数相乘

GeoGebra 命令及参数

1. Polygon(A, B, 4.0) → Kvadrat1, a, b, c, d, C, D
2. Line(A, B) → e
3. Point(e) → E
4. Segment(A, E) → f
5. Point(f) → F
6. Point(Circle[F, 5.0]) → G
7. Segment(F, G) → g
8. Polygon(F, G, 4.0) → Kvadrat2, f_1, g_1, h, i, H, I
9. Dilate(B, 1.0 / nazivnik_1, A) → B_1
10. Sequence(Segment[Translate[D, i * Vector[A, B_1]], Translate[A, i * Vector[A, B_1]]], i, 1.0, nazivnik_1 - 1.0) → podjelaKvadrata1
11. Dilate(H, 1.0 / nazivnik_2, G) → H_1
12. Sequence(Segment[Translate[F, i * Vector[G, H_1]], Translate[G, i * Vector[G, H_1]]], i, 1.0, nazivnik_2 - 1.0) → podjelaKvadrata2
13. Translate(A, Vector[brojnik_1 * Vector[A, B_1]]) → B_2
14. Translate(B_2, Vector[Vector[A, D]]) → C_2
15. Translate(G, Vector[brojnik_2 * Vector[G, H_1]]) → H_2
16. Translate(H_2, Vector[Vector[G, F]]) → I_2
17. Polygon(A, B_2, C_2, D) → pRazlomak1, a_1, b_2, c_2, d_1
18. Polygon(F, G, H_2, I_2) → pRazlomak2, f_2, g_2, h_2, i_2
19. Line(B_2, C_2) → j
20. Line(I_2, H_2) → k
21. Intersect(j, k) → S
22. Polygon(A, B_2, S, I_2) → presjek, a_2, b_1, s, i_1
23. If(Distance[A, F] < 0.01, true, false) → Over