Design concept: The Mathematics Curriculum Standard clearly points out: "Students are the masters of mathematics learning, and teachers are the organizers, guides and collaborators of mathematics learning." In teaching, teachers should stimulate students' enthusiasm, provide students with opportunities to fully engage in mathematical activities, and let students really understand and master basic mathematical knowledge and skills, mathematical ideas and methods with the help of teachers in the process of independent exploration and cooperation and exchange.

Design features: in the form of activities, let students learn more actively under the guidance of teachers.

Teaching requirements:

1, so that students can correctly count the number of objects between 1 1-20, know the number of 1 1-20, correctly read the number of1-20, and initially grasp the number within 20.

2. Make students understand the decimal system of numbers and know that "10 1 is a ten" and "two tens are 20".

3. Understand the relationship between mathematics and life, cultivate students' estimation consciousness and have a preliminary understanding of numbers.

Teaching focus:

Through practical operation, exploration and cooperation, students can master one ten and several ones, and correctly read the number 1 1-20.

Teaching difficulty: establishing the concept of the tenth unit of calculation.

Teaching preparation: courseware, sticks

Teaching presuppositions and comments:

First, create situations and introduce new knowledge.

[Computer: Little Monkey] Teacher: Look, children, who's here? Little monkey: Hello, children. Today, we will study together. Would you like to? Little monkey: Great, I am a good boy at school, too. I have many small red flowers. I don't believe you can count. Teacher: Little friend, let's count how many little red flowers the little monkey got, shall we? Raise your right hand and count while gesturing. [Count to 10] [Computer demonstration of10 flower,1flower with question mark] Teacher: If you count backwards, you need a number greater than10. Today, we will learn a number greater than 10. [blackboard writing: 65448]

(Comment: Children get little red flowers rewarded by teachers every day. By counting little monkeys to create the situation that "counting to 10 is greater than the number of 10", how many little red flowers have been obtained, which is not only close to students, but also true and natural. )

2. Practice and explore new knowledge

(A) the establishment of the concept of "ten" in numeration unit

Teacher: Today, the eggplant teacher brought us some math problems for the children to solve. Would you like to? Listen, what's the first question the eggplant teacher brought us?

Teacher Eggplant: Please count 12 sticks and line up on the table.

(Student operation, teacher patrol)

Teacher: Dongdong, a child in the computer, also put some sticks. Let's count it for him.