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分类有理数、整数与自然数

分类有理数、整数与自然数
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2016-06-23 23:46
函数解析几何几何作图
本范例通过随机生成的数字，让学生练习将数字分类为自然数、整数或有理数。涉及的核心数学概念包括数的分类。使用了GeoGebra中的Segment, Circle, Random, Sum, Text, Polygon等命令。适合初中及以上学生学习数的概念。

GeoGebra 命令及参数

  1. Segment(center, point1) → SegRad1
  2. Circle(center, CircRad3) → circle3
  3. Circle(center, CircRad2) → circle2
  4. Circle(center, CircRad1) → circle1
  5. Random(0, 99) → RandNum1
  6. Random(0, 99) → RandNum2
  7. Random(1, 3) → diceroll1
  8. Circle(point1, 1) → HidePoint1
  9. Random(1, 9) → RandNum3
  10. Random(1, 2) → dicerollnegative
  11. Circle(point2, 1) → HidePoint2
  12. Sum({count1, count2, count3, count4, count5}) → HelperFunction1
  13. Random(1, 3) → diceroll2
  14. Random(1, 3) → diceroll3
  15. Random(1, 3) → diceroll4
  16. Random(1, 3) → diceroll5
  17. Segment(center, point2) → SegRad2
  18. Segment(center, point3) → SegRad3
  19. Segment(center, point4) → SegRad4
  20. Segment(center, point5) → SegRad5
  21. Circle(point3, 1) → HidePoint3
  22. Circle(point4, 1) → HidePoint4
  23. Circle(point5, 1) → HidePoint5
  24. Circle(center, CircRad1) → circleshade1
  25. Circle(center, CircRad2) → circleshade2
  26. Circle(center, CircRad3) → circleshade3
  27. Circle((16, 2), 1.2) → startcircle2
  28. Circle((16, -1), 1.2) → startcircle3
  29. Circle((16, -4), 1.2) → startcircle4
  30. Circle((19, 2), 1.2) → startcircle1
  31. Circle((19, -1), 1.2) → startcircle5
  32. Text("Drag the numbers to the most appropriate region in the diagram.") → Inst
  33. Text("Your Numbers") → text4
  34. Polygon(A, B, C, D) → poly1, a, b, c, d
  35. Text("Classify each number as a whole number, an integer, or a rational number.") → GenInstructions