The advantages of the draft for evaluating the significance of proportion are insufficient.

The advantages of the draft evaluation of the significance of proportion are as follows:

The significance of this ratio is a solid, rich and cordial class, which makes us feel the simplicity and charm of mathematics. Teachers pay more attention to the complete construction of mathematical knowledge and form a clear knowledge network. Before teaching the meaning of proportion, Mr. Wen reviewed the method of calculating ratio, and successfully derived the meaning of proportion according to the ratio relationship between the two ratios, highlighting the teaching focus and providing a strong guarantee for judging whether the relationship can be proportional.

There is still a little deficiency. The method of finding the ratio in the review session should be emphasized. After a long time, students forget to find the ratio, especially when there are decimals and fractions in the ratio. There are many methods that need to be used flexibly. For example, if the decimal is divided by the decimal, it can be converted into decimal calculation to find the ratio. When judging whether it is proportional, let students talk about how to get the proportion, which is not only conducive to accurately judging whether it is proportional, but also paves the way for solution ratio.

Introduction to classroom assessment:

The so-called class evaluation, as its name implies, is to evaluate classroom teaching. It is an extension of post-lecture teaching. It is an activity to comment on the gains and losses of teachers' classroom teaching, and it is an important means to strengthen teaching routine management, carry out educational research activities, deepen classroom teaching reform, promote students' development and improve teachers' professional level. This paper makes a pertinent analysis and evaluation of the success or failure of classroom teaching and its reasons, which can correctly explain the educational behavior in the classroom from the height of educational theory.

Specifically, it refers to the evaluator's value judgment on the activities of teachers and students in classroom teaching and the changes caused by them according to the classroom teaching objectives. Classroom evaluation is a regular activity in the process of teaching and scientific research. There are many kinds of class evaluation. Colleagues learn from each other and discuss class evaluation together. There are school leaders' evaluation of diagnosis and examination; There are also high-level expert appraisal or class evaluation and so on.