Teaching plan design
First, the background of the lesson plan
1. For students: □ middle school √□ primary school 2. Subject: mathematics.
2. Class schedule: 1 class.
3. Teacher preparation:
Multimedia courseware, some three-dimensional graphics, some plane graphics, white paper, crayons, cement, sticks and so on.
Second, the teaching theme
Teaching objectives:
Knowledge goal: through observation, operation and other activities, we can initially recognize and identify rectangles, squares, triangles and circles, and realize that "face" is on "body".
Ability goal: form space concept and innovation consciousness in the process of hands-on operation.
Emotional goal: through the extensive use of graphics in life, I feel that mathematics knowledge is closely related to life and stimulate students' interest in mathematics learning.
Third, teaching material analysis
This lesson is the content of unit 4 "interesting graphics" in the compulsory education standard experimental textbook (Beijing Normal University Edition). The textbook starts with drawing (printing) the surface of simple geometry and introduces plane graphics, so that students can intuitively understand some plane graphics and experience the head system of plane graphics and simple geometry. This reflects the design idea from three-dimensional to plane. The teaching content of this course is taught after the students have learned three-dimensional figures such as cubes, cuboids, cylinders and spheres, which lays the foundation for further learning geometry knowledge in the future.
Fourth, teaching methods.
This teaching activity presents the teaching content in the mode of "three-diligence and four-ring teaching method", focusing on letting students experience the exploration and modeling process from three-dimensional to plane, emphasizing the development of students and cultivating their spatial concept. When introducing new lessons, we mainly use conversation method to connect three-dimensional graphics with plane graphics, and when teaching examples, we mainly use the method of operating experiments, so that students can experience face to face and operate experiments in the hands-on process. Through "touching, looking and drawing", we can distinguish triangle, circle, rectangle and square on the basis of intuitive feeling, and realize "face in the body"
Teaching process of verbs (abbreviation of verb)
First of all, create a situation and introduce a new lesson (directional induction)
Teacher: Today, the teacher invited some old friends to everyone. Who are they? Please see: (showing cuboid, cube, cylinder and triangular prism)
Teacher: There is such an object on the children's desks. Please take out the cuboid on the desktop and follow the teacher to touch one side of the cuboid. Tell me how you feel. (Perceptual surface is on the body)
Health: Smooth.
Second, the operation of communication, explore new knowledge (independent inquiry)
1, say it
Teacher: Teacher Sun has a picture here, which is the palm print of the children in our class. Do you remember how we moved the handprint to the white paper?
Student: I printed it; I'm sketching.
Ask students to demonstrate.
2. Student activities.
Teacher: The children are amazing. The teacher has prepared some tools for everyone. Please print or draw these planes.
Hands-on operation. Pay attention to the teacher: observe the students' works. )
Report:
Teacher: I'd like to invite some students to show your works to everyone.
Student 1, which graphics are invited? From whom was it invited?
Health: I invited a square, which was invited from a cube.
Teacher: You speak very well. Do you think the graphics he moved are the same as those moved by the teacher? Similarly, the teacher shows the names of squares and figures on the blackboard. Let's ask another student to show his work. Can you tell me who you invited? From whom was it invited?
Health 2: ...
The teacher shows the rectangle, triangle and circle in turn according to the students' answers.
Teacher: The children are amazing. They show one side of an object in different ways. A plane like this is called a plane figure. (blackboard title: understanding graphics. )
3. I recognize it
Teacher: Let's observe these plane figures together. You already know their names. Let's try to remember them!
Discuss at the same table.
1: Rectangles and squares have four angles, triangles have three angles, and circles have no angles.
Health 2: ...
(Teachers can give appropriate guidance when students report)
4. The teacher summarized the characteristics of each figure.
Children, do you know and remember these good friends? I am now testing you on behalf of these new friends. Please take out the picture in the envelope.
Third, consolidate and deepen, migrate and expand (discuss and solve doubts)
1, the game, I said you take it.
Please take out the triangle, and I will take out the triangle;
Please take out the square and I'll take out the rectangle;
Please take out the rectangle, and I will take out the rectangle;
Please take out the circle. I'll take out the circle.
2, put a pendulum
Please set up the plane figure with a stick (students name two students and demonstrate them on the blackboard at the same time)
Report; What posture are you posing for? How many sticks did you put?
Health: ...
Teacher: there is a number that no one has put out. What is this?
Health: Round.
Teacher: Why can't the circle come out?
Health: A circle has no horns and a stick is straight, so ...
3. I recognize it
(1) Show a part of the picture and let the children guess the picture. Tell me how you guessed.
Student: I guess it's based on the edge and angle.
(2) Show courseware: What shapes are these traffic signs? (Students introduce the role of traffic signs while recognizing and infiltrate traffic safety education. )
Step 4 look for it
Where have you seen such a figure in your life?
Students report and communicate.
5. Count.
Show a picture composed of plane figures, and ask children to count the number of each figure.
Fourth, feedback and summary, and do puzzles.
Teacher: What did we learn together today? (Know the graphics) What graphics do you know? (rectangle, square, triangle, circle), then can you spell out a beautiful pattern with these figures? Please spell it with the graphics in the envelope bag with Tongzhou. When you're done, tell me what you spelled. How many rectangles, squares, triangles and circles did you use to spell this figure?
Put them together and show them.
Five, homework, effect feedback.
Book practice
Sixth, teaching reflection.
In the teaching of this course, we pay attention to let students experience the process of inquiry and modeling from three-dimensional to plane, pay attention to the development of students, and emphasize the cultivation of students' spatial concepts. When teaching examples, we mainly use the method of operation experiment, so that students can experience face to face in the process of hands-on, and learn by observing, operating, communicating and cooperating in the process of operation experiment, and pay attention to let students learn through operation experience. However, there are still some shortcomings in teaching, and cooperative learning among groups should be strengthened in the future, which is a long-term process.