After studying the teaching research and case analysis of "fraction, decimal and percentage" in primary school mathematics, I will talk about my immature views on "understanding percentage" in case display. The main content of this lesson is the meaning of percentage, which is based on the fact that students have learned integers, decimals and fractions, especially to solve the problem that "a fraction of one number is a fraction of another number". The strategy of students' independent inquiry and teachers' guidance is adopted to let students feel the meaning of percentage in real life, find out in active speculation and understand the meaning of percentage in specific applications. Mainly reflected in the following aspects:

First, start with what students are interested in and stimulate their interest in learning.

I introduce the topic with the statistical data of Yao Ming, a figure that students are familiar with and like in the NBA, and draw a percentage in the process of comparing the shooting level of students in this class. At this time, the students have vaguely realized that the percentage is a number, which means that one number is the fraction of another number, and it is divided by the denominator of 100 for comparison. This not only reflects the coherence of knowledge, but also gives students a preliminary understanding of the meaning of percentage and the benefits of using percentage when comparing data.

Second, keep close contact with life and understand the meaning of percentage.

Percentage is the knowledge that is often used in daily production and life. Although the students don't officially know the percentage, they are not ignorant. So I ask students to investigate the percentage in life before class, so that students can realize the wide application of percentage in life and the significance of knowledge to individuals, which plays a very good role in stimulating internal learning motivation. In this class, I directly take the data and questions investigated by students as the objects of study and research. Students know the percentage in the process of understanding and interpreting the data surveyed by themselves and their classmates.