Donut-Detektivin: Finding the proportionality factor k

Donut-Detektivin: Finding the proportionality factor k
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2023-07-20 14:11
This interactive GeoGebra lesson uses a “Donut Detective” step-by-step interface to guide students to identify what the proportionality factor k means in a direct proportionality situation, and to complete a multiple-choice fill-in question. The key math concepts are direct proportionality, the definition/interpretation of the proportionality constant k, and recognizing that for a direct proportio

GeoGebra Commands & Parameters

  1. Sequence(A + (i * Vector[A, C] / 4), i, 0, 4) → TablePointsLeft
  2. Sequence(D + (i * Vector[A, C] / 4), i, 0, 4) → TablePointsRight
  3. Midpoint(A, D) → E
  4. Midpoint(B, C) → F
  5. Segment(F, E) → f
  6. Segment(A, C) → g
  7. Segment(D, B) → h
  8. Sequence(Segment[TablePointsLeft(i), TablePointsRight(i)], i, 1, 5) → TableHorizontal
  9. SpeechBubbleRight(G, 11.5, 1) → Vieleck1
  10. Textfield(input1) → InputBox1
  11. Textfield(input2) → InputBox2
  12. Textfield(input3) → InputBox3
  13. Sequence(H + (i * Vector[A, C] / 4), i, 0, 4) → l1
  14. Sequence(Segment[TablePointsLeft(i), l1(i)], i, 1, 5) → l2
  15. Segment(I, H) → j
  16. SpeechBubbleRight(J, 12, 2.3) → Vieleck2
  17. Segment(C, K) → i
  18. Segment(K, L) → k
  19. Segment(L, I) → l
  20. Segment(B, N) → m
  21. Segment(F, M) → n
  22. Textfield(input4) → InputBox4
  23. Textfield(input5) → InputBox5
  24. SpeechBubbleLeft(Q, 8, 1.8) → Vieleck3
  25. Vertex(Markierung(1), 4) → IPos
  26. SpeechBubbleRight(Z, 11.5, 1) → Vieleck4
  27. SpeechBubbleRight(A_1, 10, 1.7) → Vieleck5