Teaching objectives

1 will compare the sizes of numbers within 100.

2. Feel the laws contained in a series of numbers.

Teaching focus

Compare the sizes of numbers abstractly.

Teaching difficulties

Compare the sizes of numbers abstractly.

Teaching preparation

One hundred counters

Teaching design

First, create a situation.

1, the teacher shows the theme map. Bears have 2 1 red fruits, and monkeys have 18 red fruits.

2. Students observe who has more red fruits and who has less red fruits. Why?

Observe, discuss

Second, explore new knowledge.

1. Now we know who has more red fruit. Then who can express it with the symbols we have learned?

2. Students answer. On the Methods of Memorizing ">" and ""

3. Fill in: Let the students observe the counter and write the numbers in the notebook independently.

32O34, 100O99, and then compare them and fill in the mathematical symbols.

4. Have a look and fill in the blanks. Know the numbers on the ruler and arrange them from small to large.

Practice, discuss

Third, consolidate new knowledge.

65438+ 0, 2, 3, 4 and 5 questions after class

Four. abstract

What did we learn in this class? What did you get? Is there a problem?