Extended data:

Course introduction:

The content of micro-lesson is the content of the third lesson of Unit 6, Grade 2, People's Education Press. This example is based on operation. Through horizontal and vertical comparison, we can understand the writing method of vertical division with remainder, know the names of each part in vertical division, and compare the operation process, so that students can understand the meaning of each part in vertical division. By comparing vertically and horizontally, we can clearly see how much the quotient is, how many roots are divided by, and how much the remainder is. However, horizontally, it is impossible to see how many roots are divided by, so students should feel the superiority of vertical division calculation.