First, to stimulate students' interest in doing mathematics
Students must learn and enjoy learning in order to "enjoy it".
(1) Play to stimulate interest. To stimulate students' desire for practical activities, game method is a good choice. For example, when seventh-grade students learn "rational number mixed operation", they should consider the factors of seventh-grade students' activeness, love to play and poor mathematical operation ability, and design "blackjack game". The rules of the game are as follows: each student draws four cards from playing cards, a is 1, j is 1 1, q is 12, k is 13, red is negative and black is negative. Students can choose any calculation method, such as addition, subtraction, multiplication and division. Activities can be carried out in groups or in the whole class at the same time. Students play this game, which not only satisfies their own psychology, but also achieves the miraculous effect of "playing middle school". This kind of game is often played in class and after class, which is very helpful for students to improve their computing ability, satisfy their competitive psychology and enjoy the fun of success.
There are many games in junior high school mathematics, such as the mixed operation of learning scores and the game of "touching dice" Through these games, students can learn mathematics in a relaxed atmosphere, experience middle school mathematics in person, and feel the fun of mathematics in activities, which not only experiences the success of learning, but also enhances their confidence in learning.
(2) Story method stimulates interest. Mathematics is a rigorous logic discipline. For students, most of them are not ideal in mathematics, either their computing ability is poor or their spatial imagination and agile thinking are poor. Therefore, they are in awe of mathematics and think that mathematics is more difficult than going to heaven. To solve all this, it is the key to stimulate students' interest in learning. There are many ways to stimulate interest, such as games, stories and competitions.
In mathematics teaching, there are many stories that can be used for reference, such as the origin of "Tangram" and "learning on the chessboard", which can stimulate students' interest in exploring the mysteries of mathematics. There are countless stories about mathematicians such as Zu Chongzhi, Chen Jingrun and Hua, which can stimulate students' enthusiasm and passion for learning mathematics, broaden their learning horizons and enrich their learning contents.
For example, when learning "rational number", we can combine the story of "the origin of rational number": rational number originated from the concept in the history of mathematics, which is the ratio of integer A to non-zero integer B, that is, a/b, which the Greeks think is "proportional number". In China, the translation of "rational number" is not a mistake made by China, but a mistake made by Japanese scholars in the process of translation and understanding when they spread from China to Japan. Japanese scholars didn't really understand the real "reason", but directly translated it into "rational number" and "irrational number", and then spread it to China, continuing the mistakes. With this story, students can understand the history of mathematics and broaden their horizons.
Second, create a situation to review the past and learn new things.
When studying "Census and Sampling Survey", situational method can enable students to study and participate in activities in "real" situations.
For example, using multimedia to present various surveys in real life, such as the service life of light bulbs, the number of fish in the Yangtze River, and the ratings of 6+ 1 watched by the whole class, make students realize that they will encounter all kinds of data all the time in their lives. These data contain a lot of information, which can help us understand the world around us and make correct inferences and reasonable decisions. There are two ways to investigate data, one is general survey and the other is sampling. Both have their advantages and disadvantages. In life, some are suitable for general survey, while others can only be sampled. For example, the service life of a batch of light bulbs cannot be tested one by one, because such an investigation is destructive; It is impossible to catch all the fish in the Yangtze River, so we can only use sampling survey. The ratings of "6+ 1" in the whole class are suitable for the general survey. Then ask: What's the difference between the general survey and the abstract survey? Ask the students to discuss and explore, and then propose activities: Please design a questionnaire after class to investigate the situation of 46 students who like mathematics in the class. This activity is based on general survey and sampling survey, which helps students to effectively use survey methods to carry out meaningful activities, consolidate and apply knowledge through activities, and achieve the goal of learning by doing and applying what they have learned.
Third, ingenious design promotes its innovation.
In activities, we should give full play to subjective initiative, innovate activity methods, cultivate innovative thinking ability, and improve creativity and innovative consciousness.
For example, when learning "plane graphics in life", design creative activities to show students' personality and innovative thinking, so that students can give full play to their imagination and use circles, triangles, quadrangles, polygons and so on. To conceive familiar life scenes, design exquisite patterns, and then attach short comments. In class, the students' wonderful performances made the class really move and come alive. Some students have come up with their own designs. In a long square pond, the clear water ripples and fish swim happily in the water. A female classmate conceived and designed a masterpiece of missing her mother: a cartoon girl with tears in her eyes and a few words in her hand, full of endless thoughts. A heart in the letter is crying, "Mom, come back, I miss you!" " "The comments are moving.
This activity not only realized the math classroom with activity as the theme, but also created a creative and innovative math classroom through the activity, which made students become the masters of the classroom and the masters of learning.
Mathematics and life are inseparable. Teachers should grasp this feature in teaching, use situational method and game method to stimulate students' interest and enthusiasm in participating in mathematics activities, carefully design activities and tasks, let students experience the happiness of learning, feel the significance of activities, learn to learn innovative learning, do middle school mathematics, realize the perfect integration of mathematics classroom and mathematics practice activities, and build a mathematics classroom with activities as the main body, thus cultivating applied talents.