第六册第四单元“混合运算”教学浅见张健一、讲清混合运算顺序，掌握混合运算步骤运算顺序是进行混合运算的核心．学生能否正确进行混合运算，很大程度上取决于对运算顺序的掌握的程度。因此，一方面加深学生对运算顺序的认识和理解，另一方面要强调运算顺序的普遍适用性... The sixth unit fourth unit “mixed operation” teaching to see Zhang Jian a, to clarify the order of the mixture of operations, to master the sequence of operations is the core computing hybrid operation. Whether or not a student can perform a mixed operation correctly depends very much on the degree of mastery of the order of operations. Therefore, on the one hand, students' understanding and understanding of the order of operations should be deepened. On the other hand, the general applicability of the order of operations should be emphasized.