乘法和分数建模

通过选择合适的表示方式，对涉及乘法、面积、分数和单位换算的实际问题进行建模，并在具体情境中解释数学结果。

Model real-world problems involving multiplication, area, fractions, and unit conversion by choosing appropriate representations and interpreting mathematical results in context

学习证据 / Evidence

• 用点阵图为铺地砖/面积问题建模，并写出对应的乘法算式
• 用分数计算来表示食谱按比例调整的问题，并解释答案中的克数
• 用条形模型列出单位换算问题（米到厘米）

• Model a tiling/area problem with an array and write the corresponding multiplication
• Represent a recipe-scaling problem as a fraction calculation and interpret the answer in grams
• Use a bar model to set up a unit conversion problem (metres to centimetres)

评估问题 / Assessment

当{{name}}在解决现实问题时——比如计算一个房间的面积（平方米）——他们会选择合适的数学工具，并根据实际情况解释最终得到的数吗？

When {{name}} is solving a real-life problem — like working out the area of a room in square metres — do they choose the right maths tool for the job and interpret the final number in terms of the real situation?