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Subtracting Negatives with Counters

Subtracting Negatives with Counters
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2015-11-16 05:49
VectorCoordinate GeometryGeometric ConstructionGraphing
This example demonstrates subtracting negative numbers using a counter model. It visually illustrates the concept of negative number subtraction on a number line. Key math concepts include negative operations and number line representation. The construction utilizes GeoGebra commands like Circle, Vector, Translate, and Segment to create and manipulate counters. Suitable for middle school mathematics education to help students grasp the principles of subtracting negative numbers.

GeoGebra Commands & Parameters

  1. Circle(H, 0.3) → c
  2. Circle(I, 0.3) → d
  3. Circle(A, 0.3) → e
  4. Circle(C, 0.3) → f
  5. Circle(B, 0.3) → g
  6. Circle(F, 0.3) → h
  7. Circle(D, 0.3) → k
  8. Circle(P, 0.3) → p
  9. Circle(E, 0.3) → q
  10. Circle(G, 0.3) → r
  11. Circle(N, 0.3) → s
  12. Circle(L, 0.3) → t
  13. Circle(K, 0.3) → c1
  14. Circle(O, 0.3) → d1
  15. Circle(M, 0.3) → e1
  16. Circle(J, 0.3) → f1
  17. Circle(S, 0.3) → q1
  18. Circle(U, 0.3) → t1
  19. Circle(T, 0.3) → g1
  20. Circle(R, 0.3) → h1
  21. Vector(Q, V) → u
  22. Translate(r, u) → r'
  23. Translate(k, u) → k'
  24. Translate(p, u) → p'
  25. Translate(q, u) → q'
  26. Translate(q1, u) → q1'
  27. Translate(s, u) → s'
  28. Translate(t, u) → t'
  29. Translate(t1, u) → t1'
  30. Segment(W, A1) → a