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分数条形图 by IM 6 – 8 Math

分数条形图 by IM 6 – 8 Math
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2017-06-09 05:01
函数几何作图函数图像
①本范例通过 GeoGebra 展示分数条形图，直观演示分数的表示与比较；②涉及核心数学概念包括分数、除法、线性方程、函数图像；③作图要点：使用 Segment、Textfield、Sequence 命令创建了条形图、文本标签和序列；④适合初中数学教学，用于理解分数运算和函数关系。

GeoGebra 命令及参数

  1. Segment(B_2, I) → f_1
  2. Segment(C_2, J) → g_1
  3. Segment(D, K) → h_1
  4. Segment(E, L) → i_1
  5. Segment(F, M) → j
  6. Segment(G, H) → k
  7. Segment(N, P) → l
  8. Segment(O, Q) → m
  9. Textfield(b) → bNumerator
  10. Textfield(d) → dDenominator
  11. Sequence(Polygon[A + ((dist * (i - 1) / d), 0), A + ((dist * i / d), 0), A + ((dist * i / d), ht), A + ((dist * (i - 1) / d), ht)], i, 1, b) → ShadeParts
  12. Segment(R_1, S_1) → p
  13. Textfield(a) → aNumber
  14. Textfield(f) → fDivideWhole
  15. Segment(U, U + (0, -3)) → q
  16. Segment(V, V + (0, -3)) → r
  17. Sequence(Polygon[B + ((dist * (i - 1) / f), 0), B + ((dist * (i - 1) / f), ht), B + ((dist * i / f), ht), B + ((dist * i / f), 0)], i, 1, (f * a)) → Whole
  18. Sequence(Polygon[R + ((i * dist), 0), R + (((i + 1) * dist), 0), R + (((i + 1) * dist), ht), R + ((i * dist), ht)], i, 0, h - 1) → DivisorUnits
  19. Sequence(Polygon[S + ((dist * (i - 1) / d), 0), S + ((dist * (i - 1) / d), ht), S + ((dist * i / d), ht), S + ((dist * i / d), 0)], i, 1, (h * d)) → FracParts
  20. Sequence(T_1 + (((i * 0.17) * dist), 0), i, 1, 10) → list6