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与学生相对熟悉的列算式解决实际问题不同,列方程解决实际问题的关键是通过在已知条件和所求问题之间建立相等关系来获得问题的答案。对小学生来说,掌握这样的思维方式和解题策略是有一定难度的,需要一个循序渐进的学习过程,更需要在不同的问题情境中不断积累、逐步感悟。实际教学时,要重视引导学生联系已有的知识经验和生活经验寻找、比较和选择实际问题中的等量关系,
Different from students’ familiar formulas to solve practical problems, the key to solve practical problems of column equations is to obtain the answers to the questions by establishing an equal relationship between the known conditions and the desired problems. For pupils, mastering this way of thinking and problem-solving strategies is a bit difficult and requires a step-by-step process of learning. In addition, students need to accumulate and perceive gradually in different problem situations. The actual teaching, we should attach importance to guide students to contact the existing knowledge and experience of life experience to find, compare and choose the actual relationship between the same amount,