解方程 GeoGebra 示例 by K Redmond

解方程 GeoGebra 示例 by K Redmond
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2017-08-18 01:09
①本范例演示通过 GeoGebra 动态解方程的过程与结果;②涉及核心数学概念包括方程求解、变量变化、中位线、不等式、几何分布等;③构造要点提炼自命令: Random, RandomElement, If, Textfield; 对象: showsteps, display, f, r0, g, r1, f_1, g_1, textFinalStep, textEqnafterOperation2, r2, r3, f_2, g_2, textEqnafterOperation1, f_3, g_3, textOperation1QtyLeft, textOperation1QtyRight, textProblemPosed, textOperation2QtyLeft, textStartEqn, textOperation3QtyLeft, textOperation3QtyRight, step, textOperation2QtyRight, textafterOperation1, textFinalStatement, textafterOperation2, answerx, inputBox1, correct, stepsvalue, textFeedbackonAnswer, button1, textStepNumberDisplay, textOperationBothSides3, textOperationBothSides2, textOperationBothSides1;④适合高中数学教学或自学,用于理解方程求解的可视化方法。

GeoGebra 命令及参数

  1. Random(-5, 5) → r0
  2. RandomElement({-9, -8, -7, -6, -5, -4, -3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}) → r1
  3. RandomElement({-9, -8, -7, -6, -5, -4, -3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}) → r2
  4. RandomElement({-9, -8, -7, -6, -5, -4, -3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}) → r3
  5. If(showsteps ≟ true, 10 - display, 1) → step
  6. Textfield(answerx) → inputBox1
  7. If(answerx ≟ g(0), 1, 0) → correct
  8. If(showsteps ≟ true, 10, 1) → stepsvalue