Donut-Detektivin: Finding the proportionality factor k
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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
Sequence(A + (i * Vector[A, C] / 4), i, 0, 4) → TablePointsLeftSequence(D + (i * Vector[A, C] / 4), i, 0, 4) → TablePointsRightMidpoint(A, D) → EMidpoint(B, C) → FSegment(F, E) → fSegment(A, C) → gSegment(D, B) → hSequence(Segment[TablePointsLeft(i), TablePointsRight(i)], i, 1, 5) → TableHorizontalSpeechBubbleRight(G, 11.5, 1) → Vieleck1Textfield(input1) → InputBox1Textfield(input2) → InputBox2Textfield(input3) → InputBox3Sequence(H + (i * Vector[A, C] / 4), i, 0, 4) → l1Sequence(Segment[TablePointsLeft(i), l1(i)], i, 1, 5) → l2Segment(I, H) → jSpeechBubbleRight(J, 12, 2.3) → Vieleck2Segment(C, K) → iSegment(K, L) → kSegment(L, I) → lSegment(B, N) → mSegment(F, M) → nTextfield(input4) → InputBox4Textfield(input5) → InputBox5SpeechBubbleLeft(Q, 8, 1.8) → Vieleck3Vertex(Markierung(1), 4) → IPosSpeechBubbleRight(Z, 11.5, 1) → Vieleck4SpeechBubbleRight(A_1, 10, 1.7) → Vieleck5