论文部分内容阅读
根据不同的教学目的,设计相应的专项练习,让学生练在关键处,可以收到事半功倍的效果。一、通过专项练习突破教学难点例如,在分数、小数四则混合运算这部分内容里,由于分数、小数相乘时可以先约分再乘是新知识,而课本没有安排例题教学,知识坡度较大,教学时可以设计如下专项练习突破这个教学难点。1.运用分数基本性质填空。练习目的是使学生明确约分方法可以推广到小数与整数,小数与小数之间进行。2.讨论:下面各题哪些适合先约分再乘,哪些不
According to different teaching purposes, the design of the corresponding special exercises for students to practice at the key, you can receive a multiplier effect. For example, in fractional, fractional four mixed computing in this part of the content, due to fractional, fractional multiplication can be divided first and then multiplication is a new knowledge, but the textbook does not arrange the teaching of examples, the larger the slope of knowledge , Teaching the following special exercises can be designed to break the teaching difficulties. 1. Use the basic characteristics of the fractional fill in the blank. The purpose of the exercise is to make it possible for students to explicitly specify the method of dividing points between decimals and integers, between decimals and decimals. 2. Discussion: Which of the following questions are suitable for about points and then multiplied, what is not