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括号运算练习

括号运算练习
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2024-02-26 23:50
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所属专题 Bruchzahlen - Verbindung der Grundrechnungsarten
该范例通过互动练习帮助学生掌握括号和运算顺序规则。它涉及的核心数学概念包括括号和优先级规则，以及如何应用括号点乘规则。通过使用GeoGebra命令如Polygon, Max, If, Textfield等，学生可以进行动态操作和观察结果。适合5-6年级的学生进行学习和练习。

GeoGebra 命令及参数

  1. Polygon(allowedRect4, allowedRect3, allowedRect2, allowedRect1) → allowedRect, a_1, b, c, d
  2. Max(widthsOptionsR) → widthR
  3. Max(heightsOptionsR) → heightR
  4. Max(heightR, Max[heightsOptionsL]) → heightL
  5. Max(widthsOptionsL) → widthL
  6. If(isShuffleOptionsLechts, Shuffle[1…numOptionsR], 1…numOptionsR) → indizesOptionsRechts
  7. If(isShuffleOptionsLinks, Shuffle[1…numOptionsL], 1…numOptionsL) → indizesOptionsLinks
  8. Textfield(input1) → InputBox1
  9. Textfield(input2) → InputBox2
  10. Polygon(PtopLeftCornerFeedback, PtopRightCornerFeedback, PbottomRightCornerFeedback, PbottomLeftCornerFeedback) → rectangleCorrect, rectangleCorrectS3, rectangleCorrectS4, rectangleCorrectS2, rectangleCorrectS1
  11. Shuffle(Sequence[Random[0, 10], i, 1, 100]) → randomNosForX, {8, 10, 10, 10, 5, 4, 5, 4, 3, 9, 8, 8, 5, 3, 9, 8, 9, 10, 9, 3, 0, 7, 8, 8, 4, 5, 8, 4, 4, 3, 1, 7, 2, 4, 4, 1, 9, 6, 10, 0, 1, 6, 1, 5, 5, 8, 2, 5, 3, 7, 0, 1, 6, 0, 9, 6, 0, 2, 10, 8, 8, 4, 2, 7, 9, 1, 4, 10, 8, 5, 3, 6, 6, 10, 10, 7, 10, 9, 5, 10, 3, 6, 10, 6, 1, 8, 6, 6, 6, 5, 3, 7, 7, 0, 10, 1, 1, 10, 3, 8}
  12. Element(randomNosForX, Mod[questionCount, 100] + 1) → numX
  13. Shuffle(Sequence[Random[0, 10], i, 1, 100]) → randomNosForY, {7, 9, 5, 5, 0, 7, 10, 5, 7, 6, 8, 6, 5, 5, 9, 2, 6, 6, 10, 0, 9, 4, 6, 5, 0, 7, 9, 7, 3, 0, 8, 3, 8, 1, 10, 0, 0, 8, 0, 2, 1, 8, 5, 2, 4, 8, 3, 8, 3, 1, 2, 0, 0, 0, 6, 2, 0, 6, 8, 1, 10, 9, 0, 3, 2, 5, 0, 0, 9, 4, 5, 3, 0, 9, 10, 10, 4, 9, 1, 8, 4, 8, 0, 2, 8, 2, 10, 0, 3, 10, 2, 5, 2, 5, 1, 8, 2, 8, 9, 3}
  14. Element(randomNosForY, Mod[questionCount, 100] + 1) → numY
  15. Append(true, Sequence[If[randomNosForX(i) ≟ randomNosForX(i - 1), false, true], i, 2, 100]) → stayX
  16. Append(true, Sequence[If[randomNosForY(i) ≟ randomNosForY(i - 1), false, true], i, 2, 100]) → stayY
  17. Remove(Sequence[If[stayX(i), randomNosForX(i), 0], i, 1, 100], Sequence[0, i, 1, 100]) → randomNosForXwithoutRepeat
  18. Remove(Sequence[If[stayY(i), randomNosForY(i), 0], i, 1, 100], Sequence[0, i, 1, 100]) → randomNosForYwithoutRepeat
  19. Element(randomNosForXwithoutRepeat, Mod[questionCount, Length[randomNosForXwithoutRepeat]] + 1) → numXwithoutRepeat
  20. Element(randomNosForYwithoutRepeat, Mod[questionCount, Length[randomNosForYwithoutRepeat]] + 1) → numYwithoutRepeat
  21. Sequence(1) → positionsOptionsRechts
  22. Sequence(Element[optionsRAll, indizesOptionsRechts(i)], i, 1, numOptionsR) → optionsRActual
  23. Length(optionsRActual) → a
  24. Sequence(Element[optionsLAll, indizesOptionsLinks(i)], i, 1, numOptionsL) → optionsLActual
  25. Sequence(allOptionsL(indizesOptionsLinks(i)), i, 1, numOptionsL) → optionsL
  26. Sequence(allOptionsR(indizesOptionsLinks(i)), i, 1, numOptionsL) → optionsR
  27. Polygon((-10, -2), (10, -2), (10, 10), (-10, 10)) → q1, q_1, r_1, s_1, t_1
  28. Polygon(E, F, G, H) → q2, e_1, f_2, g_2, h_2
  29. Polygon(I, J, K, L) → q3, i_2, j_2, k_1, l_1
  30. SpeechBubbleRight(O, 7, 2) → poly1
  31. SpeechBubbleRight(PBubble, 6, 2) → poly2
  32. Polygon(V, W, Z, A_1) → q4, v, w, z_1, k_2
  33. Text(optionsLActual(1), CenterOptionL1, true, true, 0, 0) → opL1
  34. Text(optionsLActual(2), CenterOptionL2, true, true, 0, 0) → opL2
  35. Text(optionsLActual(3), CenterOptionL3, true, true, 0, 0) → opL3
  36. Text(optionsLActual(4), CenterOptionL4, true, true, 0, 0) → opL4
  37. Text(optionsLActual(5), CenterOptionL5, true, true, 0, 0) → opL5
  38. PointIn(allowedRect) → CenterOptionR1
  39. Text(optionsRActual(1), CenterOptionR1, true, true, 0, 0) → opR1
  40. Polygon(CenterOptionR1, CenterOptionR1 - (widthR / 2, heightR / 2), CenterOptionR1 + (widthR / 2, ((-heightR)) / 2), CenterOptionR1 + (widthR / 2, heightR / 2), CenterOptionR1 - (widthR / 2, ((-heightR)) / 2), CenterOptionR1 - (widthR / 2, heightR / 2)) → rectRMove1, centeroptionr1, f, g, h, i, j
  41. PointIn(allowedRect) → CenterOptionR2
  42. Text(optionsRActual(2), CenterOptionR2, true, true, 0, 0) → opR2
  43. Polygon(CenterOptionR2, CenterOptionR2 - (widthR / 2, heightR / 2), CenterOptionR2 + (widthR / 2, ((-heightR)) / 2), CenterOptionR2 + (widthR / 2, heightR / 2), CenterOptionR2 - (widthR / 2, ((-heightR)) / 2), CenterOptionR2 - (widthR / 2, heightR / 2)) → rectRMove2, centeroptionr2, k, l, m, n, p
  44. PointIn(allowedRect) → CenterOptionR3
  45. Text(optionsRActual(3), CenterOptionR3, true, true, 0, 0) → opR3
  46. Polygon(CenterOptionR3, CenterOptionR3 - (widthR / 2, heightR / 2), CenterOptionR3 + (widthR / 2, ((-heightR)) / 2), CenterOptionR3 + (widthR / 2, heightR / 2), CenterOptionR3 - (widthR / 2, ((-heightR)) / 2), CenterOptionR3 - (widthR / 2, heightR / 2)) → rectRMove3, centeroptionr3, q, r, s, t, e
  47. PointIn(allowedRect) → CenterOptionR4
  48. Text(optionsRActual(4), CenterOptionR4, true, true, 0, 0) → opR4
  49. Polygon(CenterOptionR4, CenterOptionR4 - (widthR / 2, heightR / 2), CenterOptionR4 + (widthR / 2, ((-heightR)) / 2), CenterOptionR4 + (widthR / 2, heightR / 2), CenterOptionR4 - (widthR / 2, ((-heightR)) / 2), CenterOptionR4 - (widthR / 2, heightR / 2)) → rectRMove4, centeroptionr4, f_1, g_1, h_1, i_1, j_1
  50. PointIn(allowedRect) → CenterOptionR5
  51. Text(optionsRActual(5), CenterOptionR5, true, true, 0, 0) → opR5
  52. Polygon(CenterOptionR5, CenterOptionR5 - (widthR / 2, heightR / 2), CenterOptionR5 + (widthR / 2, ((-heightR)) / 2), CenterOptionR5 + (widthR / 2, heightR / 2), CenterOptionR5 - (widthR / 2, ((-heightR)) / 2), CenterOptionR5 - (widthR / 2, heightR / 2)) → rectRMove5, centeroptionr5, m_1, n_1, b_1, c_1, d_1
  53. If(CountIf[P ∈ answerRectLarger1(1), P, verticesR1] ≟ 4, 1, -1, CountIf[P ∈ answerRectLarger2(1), P, verticesR1] ≟ 4, 2, CountIf[P ∈ answerRectLarger3(1), P, verticesR1] ≟ 4, 3, CountIf[P ∈ answerRectLarger4(1), P, verticesR1] ≟ 4, 4, CountIf[P ∈ answerRectLarger5(1), P, verticesR1] ≟ 4, 5) → indexAnswerR1
  54. If(CountIf[P ∈ answerRectLarger1(1), P, verticesR2] ≟ 4, 1, -1, CountIf[P ∈ answerRectLarger2(1), P, verticesR2] ≟ 4, 2, CountIf[P ∈ answerRectLarger3(1), P, verticesR2] ≟ 4, 3, CountIf[P ∈ answerRectLarger4(1), P, verticesR2] ≟ 4, 4, CountIf[P ∈ answerRectLarger5(1), P, verticesR2] ≟ 4, 5) → indexAnswerR2
  55. If(CountIf[P ∈ answerRectLarger1(1), P, verticesR3] ≟ 4, 1, -1, CountIf[P ∈ answerRectLarger2(1), P, verticesR3] ≟ 4, 2, CountIf[P ∈ answerRectLarger3(1), P, verticesR3] ≟ 4, 3, CountIf[P ∈ answerRectLarger4(1), P, verticesR3] ≟ 4, 4, CountIf[P ∈ answerRectLarger5(1), P, verticesR3] ≟ 4, 5) → indexAnswerR3
  56. If(CountIf[P ∈ answerRectLarger1(1), P, verticesR4] ≟ 4, 1, -1, CountIf[P ∈ answerRectLarger2(1), P, verticesR4] ≟ 4, 2, CountIf[P ∈ answerRectLarger3(1), P, verticesR4] ≟ 4, 3, CountIf[P ∈ answerRectLarger4(1), P, verticesR4] ≟ 4, 4, CountIf[P ∈ answerRectLarger5(1), P, verticesR4] ≟ 4, 5) → indexAnswerR4
  57. If(CountIf[P ∈ answerRectLarger1(1), P, verticesR5] ≟ 4, 1, -1, CountIf[P ∈ answerRectLarger2(1), P, verticesR5] ≟ 4, 2, CountIf[P ∈ answerRectLarger3(1), P, verticesR5] ≟ 4, 3, CountIf[P ∈ answerRectLarger4(1), P, verticesR5] ≟ 4, 4, CountIf[P ∈ answerRectLarger5(1), P, verticesR5] ≟ 4, 5) → indexAnswerR5
  58. CountIf(ind ≠ -1, ind, indizesAnswerR) → numAnswersDraggedToLeft
  59. If(correct, "\vphantom{✘}✓ Richtig", If[correctpartially, "\vphantom{✓}✘ Teilweise richtig", "\vphantom{✓}✘ Falsch"]) → correctTextTemp
  60. Text((("\Large\textsf{" * correctTextTemp) * "}"), PStartCorrectText, true, true, 1, 0) → correctText

AI 绘图提示语参考

在画布上先放置一个位于(-10,-2)、(10,-2)、(10,10)、(-10,10)围成的大矩形区域。再在左侧生成若干个小文本选项，并在右侧矩形区域内随机放置4个带文字的选项点（点在大矩形内部），每个选项点以其为中心构造一个同高宽比例的小矩形框，其水平与竖直边由中心点沿宽度、半宽与高度、半高方向平移得到，矩形的朝向保持一致。另在画面中设置多段气泡式提示形状：两段右侧对齐的说明气泡，分别放在右侧区域附近，并附带文字；再画出若干四边形用于承接这些说明区域（与气泡相邻）。整体用于配合练习括号与运算优先级。
以上提示语为根据原始绘图命令整理而来，仅供参考。