Mathematics Curriculum Standard emphasizes that students should go through the process of abstracting objects into mathematical models and explaining and applying them. Therefore, I am sure that the teaching objectives of this class are:
(1) Knowledge and skill goal: Know parallelogram and trapezoid, master characteristics and understand the relationship between quadrangles.
(2) Process and Methods Objective: To explore the relationship among parallelogram, rectangle and square through hands-on operation and cooperative communication.
(3) Emotional attitude and values: develop students' spatial concept and spatial thinking ability, and cultivate innovative consciousness.
Teaching emphasis: master the characteristics and definitions of parallelogram and trapezoid.
Teaching difficulties: understanding the relationship between parallelogram, rectangle and square; Understand the meaning of the collective diagram in the book.
In teaching, I follow the teaching reform idea of "guiding inquiry, using hands and brains, supporting thinking and architectural knowledge" and adopt the following teaching methods:
(1) Guide students to carry out inquiry learning activities through observation, classification, comparison and operation.
(2) Group cooperation, communication and learning.
(3) timely use of multimedia teaching, give full play to the advantages of modern teaching methods.
Studying law:
Students experience the occurrence, development and formation of knowledge through practical operation, hands-on experiment, independent exploration and cooperative exploration, and then experience the characteristics of graphics in communication, making their learning activities a vivid, lively and personalized process.
I fully embodied the following points in the design of the teaching process:
1, pay attention to the internal connection of rational knowledge and highlight the teaching focus.
As soon as the class begins, I ask the students to recall what a quadrilateral is. Then according to its concept, I will ask my classmates to find out which objects on campus are quadrangles. Students will begin to find out the characteristics of parallelogram and trapezoid, and then use multimedia demonstration to verify the characteristics of parallelogram and trapezoid. The characteristics and definitions of parallelogram and trapezoid are summarized.
2. In previous textbooks, parallelogram and trapezoid were taught separately. The new textbook teaches parallelogram and trapezoid together. In this link, I designed a problem scenario, and quadrangles can be divided into several categories according to whether the edges are parallel or not. Students discuss and verify this problem closely, and then use this classification method to summarize the relationship between quadrangles, paving the way for understanding and breaking through the difficulties of set diagram, thus paying attention to the systematicness and rigor of mathematical knowledge and achieving the effect of killing two birds with one stone.
3. Pay attention to students' learning process. Through mathematical activities such as finding and doing, the whole class has cultivated their hands-on operation ability, space concept, innovation consciousness and group cooperation consciousness. It also stimulates students' interest in learning mathematics. Teaching students to use new knowledge in activities to expand their thinking and deepen their understanding enhances their sense of participation and subjectivity, permeates the knowledge of parallelogram and trapezoid graphic segmentation and graphic assembly, and fully embodies the new curriculum concept of "learning while learning".
4. Reflect the life of mathematics.
Let's talk about what objects around us have parallelogram and trapezoid. Show the parallelogram and trapezoid that are common in life through courseware. Let students feel that mathematics is around, and there is mathematics everywhere in life. Mathematics always serves life, arousing their enthusiasm for life and strong desire to explore, and cultivating good observation habits.