小学四年级带分数互动可视化工具
2021-06-27 06:41
本GeoGebra范例专为小学四年级学生设计，用于互动学习带分数（Mixed Numbers）的概念。通过矩形方块可视化模型，学生可以直观理解整数部分与真分数部分的组合关系。工具提供分母输入框及增减按钮，支持动态调整分母数值大小，实时观察分数方块分割变化。包含中文显示切换、答案验证文本等功能，帮助学生掌握带分数的构成、读写与基本运算，是分数启蒙教学的实用互动课件。
GeoGebra 画板及绘图内容加载中，请稍等……
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<pointStyle val="0"/>
<angleStyle val="0"/>
</element>
<command name="Polygon">
<input a0="(BaseX + (s * RectNum), BaseY + 0)" a1="(BaseX + (s * RectNum), BaseY + h)" a2="(BaseX + (s * RectNum) + width, BaseY + h)" a3="(BaseX + (s * RectNum) + width, BaseY + 0)"/>
<output a0="LastWNum" a1="k" a2="l" a3="m" a4="p"/>
</command>
<element type="polygon" label="LastWNum">
<lineStyle thickness="5" type="0" typeHidden="1"/>
<show object="true" label="false" ev="4"/>
<condition showObject="Mod[n, Denom] ≟ 0"/>
<objColor r="128" g="0" b="128" alpha="0.1"/>
<layer val="0"/>
<labelMode val="0"/>
</element>
<element type="segment" label="k">
<show object="true" label="false" ev="4"/>
<objColor r="128" g="0" b="128" alpha="0"/>
<layer val="0"/>
<labelMode val="0"/>
<auxiliary val="false"/>
<coords x="-8" y="0" z="68.8"/>
<lineStyle thickness="5" type="0" typeHidden="1"/>
<outlyingIntersections val="false"/>
<keepTypeOnTransform val="true"/>
</element>
<element type="segment" label="l">
<show object="true" label="false"/>
<objColor r="128" g="0" b="128" alpha="0"/>
<layer val="0"/>
<labelMode val="0"/>
<auxiliary val="false"/>
<coords x="0" y="3" z="-24"/>
<lineStyle thickness="5" type="0" typeHidden="1"/>
<outlyingIntersections val="false"/>
<keepTypeOnTransform val="true"/>
</element>
<element type="segment" label="m">
<show object="true" label="false"/>
<objColor r="128" g="0" b="128" alpha="0"/>
<layer val="0"/>
<labelMode val="0"/>
<auxiliary val="false"/>
<coords x="8" y="0" z="-92.8"/>
<lineStyle thickness="5" type="0" typeHidden="1"/>
<outlyingIntersections val="false"/>
<keepTypeOnTransform val="true"/>
</element>
<element type="segment" label="p">
<show object="true" label="false"/>
<objColor r="128" g="0" b="128" alpha="0"/>
<layer val="0"/>
<labelMode val="0"/>
<auxiliary val="false"/>
<coords x="0" y="-3" z="0"/>
<lineStyle thickness="5" type="0" typeHidden="1"/>
<outlyingIntersections val="false"/>
<keepTypeOnTransform val="true"/>
</element>
<command name="Sequence">
<input a0="Polygon[(BaseX + (s * RectNum), BaseY + (h / Denom * (l - 1))), (BaseX + (s * RectNum), BaseY + (h / Denom * l)), (BaseX + (s * RectNum) + width, BaseY + (h / Denom * l)), (BaseX + (s * RectNum) + width, BaseY + (h / Denom * (l - 1)))]" a1="l" a2="1" a3="Mod[n, Denom]"/>
<output a0="NumPartFraction"/>
</command>
<element type="list" label="NumPartFraction">
<show object="true" label="true" ev="4"/>
<objColor r="128" g="0" b="128" alpha="0.1"/>
<bgColor r="255" g="255" b="255" alpha="255"/>
<layer val="0"/>
<labelMode val="0"/>
<lineStyle thickness="5" type="0" typeHidden="1"/>
<pointSize val="5"/>
<pointStyle val="0"/>
<angleStyle val="0"/>
</element>
</construction>
</geogebra>