温度数轴示例
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①本范例演示了一周内某城镇周一至周四的最低气温变化,通过数轴直观展示温度数据;②涉及的核心数学概念为不等式表示与数据可视化;③作图要点提炼自构造摘要,使用了stepMax, stepper, steps, counter, text0, xmin, xmax, ymin, ymax, Randomized, button1, R1rel, R2rel, R3rel, R4rel, R1, R2, R3, R4, Problem, Monx, Tuesx, Thursx, Wedx, Monday, Tuesday, Wednesday, Thursday, text1, text2, text3, text4, text5, text6, text7, R1word, R2word, R3word, R4word等GeoGebra命令/对象;④适合初中及以上学段,用于教学温度数据表示与不等式应用。
GeoGebra 命令及参数
LaTeX(steps) → counterLaTeX("\text{Move the slider to solve the problem.}") → text0LaTeX((("\text{Monday }" * R1rel) * "\text{ Thursday}")) → R1LaTeX((("\text{Tuesday }" * R2rel) * "\text{ Monday}")) → R2LaTeX((("\text{Wednesday }" * R3rel) * "\text{ Thursday}")) → R3LaTeX((("\text{Thursday }" * R4rel) * "\text{ Tuesday}")) → R4LaTeX((((((((("\text{" * R1) * "}\cr\text{") * R2) * "}\cr\text{") * R3) * "}\cr\text{") * R4) * "}")) → ProblemLaTeX("\text{Determine the temperature for each day displayed on the number line. }") → text1LaTeX("\text{The temperature for each day is plotted on the number line. For each day,}\cr\text{read the corresponding number.}") → text2LaTeX((("\text{The temperature on Monday was }\textcolor{#000099}{" * Monx) * "^{\circ}F}.")) → text3LaTeX((("\text{The temperature on Tuesday was }\textcolor{#000099}{" * Tuesx) * "^{\circ}F}.")) → text4LaTeX((("\text{The temperature on Wednesday was }\textcolor{#000099}{" * Wedx) * "^{\circ}F}.")) → text5LaTeX((("\text{The temperature on Thursday was }\textcolor{#000099}{" * Thursx) * "^{\circ}F}.")) → text6LaTeX((("\text{Determine the meaning of the inequality statement " * R1) * ".}")) → text7LaTeX((((((((((((((((("\text{The temperature Tuesday was }\textcolor{#000099}{" * Tuesx) * "^{\circ}F}\text{ and the temperature Monday was }\cr\textcolor{#000099}{") * Monx) * "^{\circ}F}\text{; therefore, the inequality can be written as }\textcolor{#000099}{") * Tuesx) * " ") * R2rel) * " ") * Monx) * "}\text{. In other words,}\cr\text{the temperature on Tuesday, }\textcolor{#000099}{") * Tuesx) * "^{\circ}F}\text{, was ") * R2word) * " than the temperature on}\cr\text{Monday, }\textcolor{#000099}{") * Monx) * "^{\circ}F}.")) → text10LaTeX((((((((((((((((("\text{The temperature Thursday was }\textcolor{#000099}{" * Thursx) * "^{\circ}F}\text{ and the temperature Tuesday was }\cr\textcolor{#000099}{") * Tuesx) * "^{\circ}F}\text{; therefore, the inequality can be written as }\textcolor{#000099}{") * Thursx) * " ") * R4rel) * " ") * Tuesx) * "}\text{. In other words,}\cr\text{the temperature on Thursday, }\textcolor{#000099}{") * Thursx) * "^{\circ}F}\text{, was ") * R4word) * " than the temperature on}\cr\text{Tuesday, }\textcolor{#000099}{") * Tuesx) * "^{\circ}F}.")) → text14LaTeX((((((((((((((((("\text{The temperature Wednesday was }\textcolor{#000099}{" * Wedx) * "^{\circ}F}\text{ and the temperature Thursday was }\cr\textcolor{#000099}{") * Thursx) * "^{\circ}F}\text{; therefore, the inequality can be written as }\textcolor{#000099}{") * Wedx) * " ") * R3rel) * " ") * Thursx) * "}\text{. In other words,}\cr\text{the temperature on Wednesday, }\textcolor{#000099}{") * Wedx) * "^{\circ}F}\text{, was ") * R3word) * " than the temperature on}\cr\text{Thursday, }\textcolor{#000099}{") * Thursx) * "^{\circ}F}.")) → text12LaTeX((((((((((((((((("\text{The temperature Monday was }\textcolor{#000099}{" * Monx) * "^{\circ}F}\text{ and the temperature Thursday was }\cr\textcolor{#000099}{") * Thursx) * "^{\circ}F}\text{; therefore, the inequality can be written as }\textcolor{#000099}{") * Monx) * " ") * R1rel) * " ") * Thursx) * "}\text{. In other words,}\cr\text{the temperature on Monday, }\textcolor{#000099}{") * Monx) * "^{\circ}F}\text{, was ") * R1word) * " than the temperature on}\cr\text{Thursday, }\textcolor{#000099}{") * Thursx) * "^{\circ}F}.")) → text8LaTeX("\text{Use the buttons below to return to the original problem}\cr\text{or randomly generate a similar practice problem.}") → RandomizationTextLaTeX((("\text{Determine the meaning of the inequality statement " * R2) * ".}")) → text9LaTeX((("\text{Determine the meaning of the inequality statement " * R3) * ".}")) → text11LaTeX((("\text{Determine the meaning of the inequality statement " * R4) * ".}")) → text13