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Adding Integers with Different Signs

Adding Integers with Different Signs
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2017-02-11 04:55
VectorSequenceGeometric Construction
This example demonstrates the process of adding integers with different signs. The key mathematical concept involved is the addition of integers. Using GeoGebra commands such as Sequence, Segment, Midpoint, and Vector, the geometric meaning of integer addition is visually illustrated. Suitable for high-grade elementary or junior high school students.

GeoGebra Commands & Parameters

  1. Sequence((i, (-0.4)), i, -8, 8) → D
  2. Sequence((i, 0.4), i, -8, 8) → C
  3. Segment(A, B) → a
  4. Midpoint(E, F) → I
  5. Midpoint(G, H) → J
  6. Sequence(Segment[Element[C, i], Element[D, i]], i, 1, 17) → b
  7. Sequence(Segment[Element[C, i], Element[D, i]], i, 1, 17) → Sequence[Segment[Element[C, i], Element[D, i]], i, 1, 13]
  8. Vector((7, 0), B) → v
  9. Segment((0, 0.25), K) → g
  10. Segment(M, L) → f
  11. Vector((0, 0), A) → u