论文部分内容阅读
建模点1:用两步解决问题模型。教学内容:教材第2~9页的内容,包括例1、例2、例3。教材简析:本单元内容是在学生学会计算两步式题的基础上编排的。主要内容有运用加法和减法两步计算解决问题;学会使用小括号;运用乘法和加法(或减法)两步计算解决问题。教材从学生熟悉的游乐园场景入手,让学生通过观察发现生活情境中的数学问题,使学生经历从生活问题抽象成数学问题的过程,感受数学知识的现实性,建构用两步解决问题的数量关系结构模型。并让学生学会从
Modeling Point 1: Solve the problem model in two steps. Teaching contents: The content of teaching materials on pages 2 to 9, including cases 1, 2 and 3. Teaching material analysis: The unit content is based on the students learn to calculate two-step questions based on the arrangement. The main content is the use of addition and subtraction two-step calculation to solve the problem; learn to use parentheses; use multiplication and addition (or subtraction) two-step calculation to solve the problem. The material starts from the familiar amusement park scene so that students can discover mathematical problems in life through observation, make students experience the process of abstracting into mathematical problems from life problems, feel the reality of mathematical knowledge, and construct the number of problems to be solved in two steps Relationship Structure Model. And let students learn from