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Adding and Subtracting Integers Graphically

Adding and Subtracting Integers Graphically
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2012-11-13 14:52
FunctionCoordinate GeometryGeometric Construction
This example demonstrates the addition and subtraction of integers graphically. Key mathematical concepts include integers and their operations. It uses commands such as Line, Vector, Intersect, Segment, Mirror, and If in GeoGebra. Suitable for upper elementary or middle school students learning integer operations.

GeoGebra Commands & Parameters

  1. Line(C, xAxis) → d
  2. Vector(B, D) → u
  3. Vector(C, E) → v
  4. OrthogonalLine(E, xAxis) → e
  5. Intersect(e, xAxis) → F
  6. Segment(E, F) → f
  7. Segment(D, C) → g
  8. Segment(A, B) → h
  9. Mirror(E, C) → E'
  10. Vector(C, E') → w
  11. Midpoint(E, C) → G
  12. Midpoint(D, B) → H
  13. If(signo < 0, "-", "+") → TextoSigno
  14. If(a > 0, "+", " ") → TextoSignoa
  15. If(b > 0, "+", " ") → TextoSignob
  16. If(b2 ≥ 0, "+", " ") → TextoSignob2