1, teaching content: the order and comparative size of numbers.

2. teaching material analysis

Before this, students have learned the understanding and comparison of numbers within 20, which has paved the way for the study of this section. This lesson is for students to further consolidate their understanding of numbers within 100 and lay a good foundation for studying numbers within 1000 and beyond in the future. The main purpose is to let students find the arrangement law through observation, and then fill in the hundred-character table to explore the arrangement law of the horizontal, vertical and oblique rows of the hundred-character table, so as to help students understand the relationship between numbers within 100 as a whole and deepen their understanding of logarithmic meaning.

3. Analysis of learning situation

Students have been able to identify numbers within 100 and master the relative size relationship of numbers. Therefore, it is not a big problem to fill in the hundred forms in order. It is difficult to explore the arrangement law of hundreds of tables in horizontal and vertical oblique rows.

Before learning this lesson, students have got a preliminary understanding of the order of numbers and the two adjacent numbers of a number. At the same time, students are exposed to the practical problem of comparing the number of two numbers in their lives, and have initially accumulated some methods and experiences. Therefore, the focus of this lesson is to enable students to further consolidate their knowledge and skills of numbers, read and write numbers, correctly compare the sizes of numbers according to children's cognitive characteristics from concrete to abstract, strengthen their understanding of logarithmic concepts, and develop their sense of numbers.