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Multiplying Fractions by Dwi Ustanti

Multiplying Fractions by Dwi Ustanti
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2020-11-04 10:13
FunctionGeometric Construction
This example demonstrates how to perform fraction multiplication using GeoGebra. Key mathematical concepts include fractions and multiplication. By examining the commands used in the construction summary, such as Point, Polygon, Textfield, one can understand how to use GeoGebra for geometric construction. Suitable for high-grade elementary or junior high school students learning fraction multiplication.

GeoGebra Commands & Parameters

  1. Point({1 - mover, 0}) → f2Point
  2. Point({-1 + mover, 0}) → f1Point
  3. Polygon(f1Point, f1Point + (f1, 0), f1Point + (f1, 1), f1Point + (0, 1)) → f1poly, f1point, n, p, q
  4. Polygon(f2Point, E, G, H) → poly3, f2point, e, g_1, h_1
  5. Textfield(f1Text) → InputBox1
  6. Textfield(f2Text) → InputBox2
  7. IndexOf(47, TextToUnicode[f1Text]) → slash1
  8. IndexOf(47, TextToUnicode[f2Text]) → slash2
  9. Take(f1Text, slash1 + 1) → D1Text
  10. Polygon(f1Point, f1Point + (1, 0), 4) → poly1, f, g, h, i, A, B
  11. Polygon(f2Point, f2Point + (1, 0), 4) → poly2, j, k, l, m, C, D
  12. Take(f2Text, slash2 + 1) → D2Text
  13. Sequence(Segment[f1Point + (i / D1, 0), f1Point + (i / D1, 1)], i, 1, D1 - 1) → f1Bars
  14. Sequence(Segment[f2Point + (0, i / D2), f2Point + (1, i / D2)], i, 1, D2 - 1) → f2Bars
  15. Polygon(f2Point, f2Point + (0, f2), f2Point + (1, f2), f2Point + (1, 0)) → f2poly, r, s, t, a
  16. RemoveUndefined(Sequence[If[pN / i ≟ floor(pN / i), i], i, 1, pN]) → Nfactors
  17. RemoveUndefined(Sequence[If[pD / i ≟ floor(pD / i), i], i, 1, pD]) → Dfactors
  18. Intersection(Nfactors, Dfactors) → factors

AI Drawing Prompt Reference

Draw two adjacent square grids, each composed of four smaller squares. In the left grid, divide it horizontally according to the denominator of a user-entered fraction, and shade the number of rows equal to the numerator. In the right grid, divide it vertically by the denominator, and shade the number of columns equal to the numerator. Place a draggable point at the lower-left corner of each grid, so moving it shifts the entire grid. Above each grid, put a text input box for the fraction. Finally, in the left grid, highlight a rectangle whose width equals the numerator of the first fraction and height equals the numerator of the second fraction, representing the product.
The prompt above was compiled from the original drawing commands and is for reference only.