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Fraction, Decimal, and Percent on a 10×10 Grid

Fraction, Decimal, and Percent on a 10×10 Grid
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2012-08-05 11:34
PolygonCoordinate GeometryGeometric Construction
In collections Percents, Decimals, Fractions
This GeoGebra example demonstrates filling cells in a 10 by 10 grid and instantly generating the equivalent fraction, decimal, and percent representations. It reinforces core mathematical concepts such as rational numbers, decimal notation, percentage meaning, and equivalence among fractions, decimals, and percents. The construction uses GeoGebra commands including Point, Segment, OrthogonalLine, Rotate, Intersect, Polygon, Line, and GCD, together with point objects such as A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R and polygon/line elements to build an interactive hundredths grid. Suitable for upper elementary and middle school mathematics instruction, as well as independent exploration and visualization practice for percent and fraction concepts.

GeoGebra Commands & Parameters

  1. Point(Circle[A, Base]) → B
  2. Segment(A, B) → a
  3. OrthogonalLine(A, a) → c
  4. Point(Circle[A, Height]) → C
  5. Segment(A, C) → e
  6. Rotate(A, 90.0*°, A) → A'
  7. Rotate(C, 90.0*°, A) → C'
  8. Segment(A', C') → f
  9. OrthogonalLine(B, a) → g
  10. OrthogonalLine(C', c) → h
  11. Intersect(g, h) → D
  12. Segment(C', D) → i
  13. Segment(D, B) → j
  14. Polygon(C', A, B, D) → P, c', a_1, b_1, d_1
  15. Line(E, F) → k
  16. Intersect(d_1, k) → G
  17. Intersect(a_1, k) → H
  18. Segment(G, H) → l
  19. Line(I, J) → m
  20. Line(K, L) → n
  21. Line(M, N) → p
  22. Line(O, Q) → q
  23. Line(R, S) → r
  24. Line(T, U) → s
  25. Line(V, W) → t
  26. Line(Y, Z) → c_1
  27. Line(A_1, B_1) → e_1
  28. Line(C_1, D_1) → f_1
  29. Line(E_1, F_1) → g_1
  30. Line(G_1, H_1) → h_1
  31. Line(I_1, J_1) → i_1
  32. Line(K_1, L_1) → j_1
  33. Line(M_1, N_1) → k_1
  34. Line(O_1, P_1) → l_1
  35. Line(Q_1, R_1) → m_1
  36. Intersect(d_1, m) → S_1
  37. Intersect(a_1, m) → T_1
  38. Intersect(d_1, n) → U_1
  39. Intersect(a_1, n) → V_1
  40. Intersect(d_1, p) → W_1
  41. Intersect(a_1, p) → Y_1
  42. Intersect(d_1, q) → Z_1
  43. Intersect(a_1, q) → A_2
  44. Intersect(d_1, r) → B_2
  45. Intersect(a_1, r) → C_2
  46. Intersect(d_1, s) → D_2
  47. Intersect(a_1, s) → E_2
  48. Intersect(d_1, t) → F_2
  49. Intersect(a_1, t) → G_2
  50. Intersect(d_1, c_1) → H_2
  51. Intersect(a_1, c_1) → I_2
  52. Segment(S_1, T_1) → n_1
  53. Segment(U_1, V_1) → p_1
  54. Segment(W_1, Y_1) → q_1
  55. Segment(Z_1, A_2) → r_1
  56. Segment(B_2, C_2) → s_1
  57. Segment(D_2, E_2) → t_1
  58. Segment(F_2, G_2) → a_2
  59. Segment(H_2, I_2) → b_2
  60. Intersect(c', e_1) → J_2
  61. Intersect(b_1, e_1) → K_2
  62. Intersect(c', f_1) → L_2
  63. Intersect(b_1, f_1) → M_2
  64. Intersect(c', g_1) → N_2
  65. Intersect(c', h_1) → O_2
  66. Intersect(c', i_1) → P_2
  67. Intersect(c', j_1) → Q_2
  68. Intersect(c', k_1) → R_2
  69. Intersect(c', l_1) → S_2
  70. Intersect(c', m_1) → T_2
  71. Intersect(b_1, g_1) → U_2
  72. Intersect(b_1, h_1) → V_2
  73. Intersect(b_1, i_1) → W_2
  74. Intersect(b_1, j_1) → Y_2
  75. Intersect(b_1, k_1) → Z_2
  76. Intersect(b_1, l_1) → A_3
  77. Intersect(b_1, m_1) → B_3
  78. Segment(J_2, K_2) → c_2
  79. Segment(L_2, M_2) → d_2
  80. Segment(N_2, U_2) → e_2
  81. Segment(O_2, V_2) → f_2
  82. Segment(P_2, W_2) → g_2
  83. Segment(Q_2, Y_2) → h_2
  84. Segment(R_2, Z_2) → i_2
  85. Segment(S_2, A_3) → j_2
  86. Segment(T_2, B_3) → k_2
  87. Segment(A, C_3) → b
  88. Segment(C_3, D_3) → d
  89. Segment(D_3, E_3) → l_2
  90. Segment(E_3, A) → m_2
  91. GCD(fracnumunred, fracdenomunred) → ReduceBy

AI Drawing Prompt Reference

Draw a 10x10 grid with some segments and polygons representing fractions, decimals, and percentages. Start by creating point A and point B, then create line segment a through A and B. Next, create a line c perpendicular to line segment a and create point C through A. Create line segment e through A and C, then rotate A 90 degrees to get A', rotate C 90 degrees to get C', and create line segment f through A' and C'. Then, create a line g perpendicular to line segment a and a line h perpendicular to line c, which intersect at point D. Create line segment i through C' and D, line segment j through D and B, and create polygon C'ABD. Continue creating other segments and polygons, ultimately forming a complex 10x10 grid with multiple segments and polygons representing the relationships between fractions, decimals, and percentages.
The prompt above was compiled from the original drawing commands and is for reference only.