According to the content of this lesson, find examples from life to help students understand abstract mathematical concepts.

Heuristic teaching, intuitive teaching, the use of half-supporting and half-releasing teaching methods, reflecting the teacher-led, student-centered "double-main" activity system.

Let the students draw pictures by hand, write tables, compile with their brains and memorize multiplication formulas, which fully embodies the students' subjectivity.

Organize students to understand, remember and use, practice the process of multiplication formula corresponding to multiplication formula, and cultivate students' sense of cooperation and competition.

Teaching difficulties:

1, using different investigation methods.

2. Be able to make reasonable inferences about the investigation time.

Teaching aid preparation:

1. Write a "draw one" grid and a "fill one" form on the blackboard.

2. Calendar

Teaching process:

First, introduce new courses.

1. What day is it today? Does anyone have a birthday today?

Today is obviously his birthday. He brought a birthday cake to share with us. Let's sing "Happy Birthday" for him, shall we?

Students, do you know when your birthday is? Who wants to talk?

I want to know when the students' birthdays are. What should I do?

Second, play middle school.

1, say it.

When is your birthday? Do you know what season it is?

2. One point.

Which months are spring? Which months are summer? Which months are autumn? Which months are winter? How are the four seasons divided?

(1) Group discussion.

(2) Communicate with the whole class and report the discussion results.

Tell me if you have any good ways to remember the division of the four seasons.

3. investigation.

(1) Investigate students' birth seasons in the way you like.

(2) Group communication: How to collect and sort out the data obtained from the survey?

Step 4 apply a layer.

Color the statistical table and organize the data.

5. Tell me about it.

(1) In which season do students have the most birthdays?

(2) How many students celebrate their birthdays in summer and winter?

(3) If you don't know the birthday of a classmate in the class, guess which season he is most likely to celebrate his birthday.

(4) What else can you find from the picture?

Third, the class summarizes.

1. What did you learn from this course?

2, the role of statistics can be great, in our lives, what other issues need statistics?

Fourth, homework

1. Find out how many students in your village are studying in primary schools, junior high schools, senior high schools and universities.

2. How many months are there in a quarter?