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Compare Fractions by Andrew Barrett

Compare Fractions by Andrew Barrett
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2015-07-22 13:35
FunctionProbability & StatisticsGeometric Construction
This example demonstrates how to compare the sizes of two fractions using a bar chart. Key math concepts include fractions, bar charts, and addition. GeoGebra commands used include LCM, Sequence, Element, Segment, and Polygon. Suitable for upper elementary or middle school students learning fraction comparison and addition.

GeoGebra Commands & Parameters

  1. LCM(den1, den2) → b
  2. Sequence((-5 + i * 10 / den1, 0), i, 0, den1) → list1
  3. Element(list1, 1) → c
  4. Sequence((-5 + i * 10 / den1, 0.8), i, 0, den1) → list2
  5. Sequence(Segment[Element[list1, i], Element[list2, i]], i, 1, den1 + 1) → list3
  6. Sequence((-5 + i * 10 / den2, 0), i, 0, den2) → list4
  7. Sequence((-5 + i * 10 / den2, -0.8), i, 0, den2) → list5
  8. Sequence((-5 + i * 10 / b, 0), i, 0, b) → list7
  9. Sequence(Segment[Element[list4, i], Element[list5, i]], i, 0, den2 + 1) → list6
  10. Segment(D, C) → a
  11. Polygon(E, F, J_1, K_1) → poly1, e, f, j_1, k_1
  12. Polygon(H, G, K_2, J_2) → Poly2, h, g, k_2, j_2
  13. Segment(J_1, K_11) → d
  14. Segment(J_1, K_2) → i
  15. Segment(K_2, K) → j
  16. Segment(K_11, K) → k