A few days ago, I listened to an open class given by Mr. Zhang Wenhong. I felt deeply and gained a lot. Teacher Zhang's unhurried manner and unhurried speaking speed create a relaxed and harmonious learning atmosphere. I think the lesson "The Meaning of Comparison" has condensed the teacher's hard work and wisdom, broadened my horizons and increased my knowledge.
In the aspect of teaching design, it embodies the teaching characteristics of simplicity, step by step, interlocking, intuitive image and humanistic care, and embodies the close connection between mathematics and daily life. The whole class is arranged in an orderly way with changes; There are both climaxes and timely adjustments. Classroom teaching is natural and smooth, lively and not chaotic.
This part is based on students' study of the relationship between fraction and division, the significance and calculation method of fractional multiplication and division, and the application of fractional multiplication and division. The essence of the concept of ratio is to compare two quantities to express the double ratio relationship between them. The ratio of any two related quantities can be abstracted as the ratio of two numbers, including the ratio of the same quantity and the ratio of different quantities. The textbook also introduces the names of two items in each ratio and the concept of ratio, and illustrates the solution of ratio and the relationship between ratio and division and fraction with examples.
In addition, there are some details that deserve our attention. Teacher Zhang has reminded students many times, such as "what should be paid attention to in writing" and "the first and last items cannot be reversed". It can be seen that Teacher Zhang attaches great importance to the cultivation of students' good study habits. She always kindly said "Don't panic, don't panic, take your time and think clearly" to create a relaxed learning atmosphere and protect students' self-esteem.
There are two suggestions about this lesson: First, after learning the meaning of comparison, Mr. Zhang gave four exercises, which were very well designed and could deepen the understanding of the meaning of comparison. Would it be better if the group communicated first and then reported? The second point: some details are not handled in place, the evaluation of students can not be rich in language and appreciation sentences are not enough.