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Working with Percent Change

Working with Percent Change
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2016-09-08 00:42
Coordinate GeometrySlider Animation
In collections Academic Math Support (9) (2016-2017)
This example generates 6 different types of percent change questions. It uses GeoGebra commands to create random questions and provides feedback. Suitable for middle school and above students to learn about percent change.

GeoGebra Commands & Parameters

  1. Random(1, 6) → rand
  2. Sequence(i, i, 1, 100, 1) → alist
  3. Random(1, 100) → arand
  4. Element(alist, arand) → a
  5. Sequence(i, i, 1, 100, 1) → blist
  6. Random(1, 100) → brand
  7. Element(blist, brand) → b
  8. Sequence(i, i, 1, 100, 1) → clist
  9. Random(1, 100) → crand
  10. Element(clist, crand) → c
  11. Sequence(i, i, 1, 100, 1) → dlist
  12. Random(1, 100) → drand
  13. Element(dlist, drand) → d
  14. Min(a, b) → m
  15. Max(a, b) → M
  16. If(rand ≟ 1, ans1, rand ≟ 6, ans6, rand ≟ 2, ans2, rand ≟ 3, ans3, rand ≟ 4, ans4, rand ≟ 5, ans5) → ans
  17. Textfield(e) → InputBox1
  18. If(abs(e - ans) < 1, "Very close! Did you round correctly?", " ") → text10
  19. If(e > ans, "No: Too high.", "No: Too low.") → text11