First, let students enjoy playing and painting.
Playing is a child's nature and learning is a child's bounden duty. How to combine the two organically is a problem that every teacher attaches great importance to. Paying attention to the fun of activities, creating a relaxed and free activity atmosphere and attaching importance to its function of pleasing the body and mind are the "lifelines" of mathematics activity classes. In my math activity class, I often let students master knowledge and enhance their learning ability through "playing" and "drawing". For example, in the activity of "practice of carrying addition within 20", I asked each student to prepare two cubes with a length of 4 cm. Write 4, 5, 6, 7, 8, 9 and 3, 4, 5, 6, 7, 8 on the six faces of each cube. In class, students throw and do it themselves, or do it with a partner at the same table, or throw 1 two people at the same table and so on. Make students "play" very hard, learn very interesting, practice very flexibly, and improve the accuracy and speed of practice obviously.
Another example: when I was teaching the wide-angle problem of planting trees in mathematics, I told the students a situation: classmates, as long as everyone plants a tree, it will become a big forest, and planting trees is everyone's responsibility. Let's plant trees in the playground! [Courseware display] On the edge of the playground, there is a 20-meter-long path. The school plans to plant trees on one side of the path, one every 4 meters. Ask students to help design a tree planting plan and calculate how many saplings are needed according to your design plan. Sit at the same table as a group and design a tree planting plan. The line segment in the table represents a path of 20 meters. Use your favorite pattern to represent the tree and draw your design. Later, we will compare which group has novel and more creative designs. According to your plan, how many trees do you need to plant? Students in the group are thinking, drawing and comparing. They consciously put all their wisdom into autonomous learning. Results Some groups used 5 seedlings, some groups used 4 seedlings and some groups used 6 seedlings. I conveniently lead to three situations of planting trees: planting at both ends; Only plant one head; Never plant at both ends. Students summarize the public examination from books;
Full length: interval length = number of intervals to be planted at both ends: number of plants = number of intervals+1.
Only plant one end: number of plants = number of intervals; Not planting at both ends: number of plants = number of intervals-1.
You see, students explore in painting, understand in painting, seek knowledge in painting and study happily, and the effect is better.
Second, let the students say happily
The biggest feature of mathematics activity class is to get rid of the common mode of teachers telling examples and students doing exercises in classroom teaching, and let students "speak" happily through the inspiration and guidance of teachers. In teaching, students are not only required to speak, but also to debate; Ask students not only why they think so, but also why they don't think so. Cultivating students' thinking quality through pleasant speaking training. For example, in another math activity class, I designed a puzzle: there are 9 birds in the tree, and the hunter killed them with a gun 1. How many birds are there in the tree at this time? This is a common, even "ancient" intelligence problem. As soon as the problem arises:
Health 1: There are no birds in the tree, because all those who were killed fell down, and all those who were alive flew away when they heard the gunshot. ...
Teacher: Do you have any different opinions?
Health 2: There are 1 birds on the tree, that is, the one that was killed hangs on the branch, and the others have flown away. ...
Health 3: There are 1 bird in the tree. This bird is the mother of a dead bird. She refused to leave. ...
Health 4: There are still eight birds in the tree, because these eight birds are just born. They are all in their nests and can't fly. ...
Health 5: There are nine birds in the tree. We can think of it this way: it was hit by silent pistol, and the one that was killed was still hanging on the branch, while the other eight birds were not scared at all. ...
Health 6: There are seven birds in the tree. Let's say there are nine birds, seven of which can't fly, but one who can fly is killed and falls to the ground, and the other one flies away when he hears the gunshot. ...
This kind of training not only enlivens the classroom atmosphere and makes students feel that mathematics is a kind of fun, but also gradually cultivates the flexibility of students' thinking and promotes the improvement of students' thinking quality.
Third, let students think seriously.
One of the characteristics of math activity class is ideological, that is, the content of the activity allows students to think seriously through the guidance of teachers, think about learning when they are happy, and learn when they are thinking about learning, so that the knowledge they have learned can be integrated, rather than a little knowledge. I showed the following figures: 10, 2, 4, 5, 9,1,15, 30, 5 1, 7 1. Students think from all aspects and are active in thinking. In this way, there are four different classification methods: (1) parity; (2) Prime number, composite number and1; (3) One digit and two digits; (4) multiples of 3 and multiples other than 3. This kind of study makes students gradually form the habit of thinking.
In short, math activity classes should take activities as the main teaching form, cultivate students' interest in math learning through activities, expand students' familiarity with the cognitive field, stimulate students' familiarity with potential intelligence, cultivate students' good thinking quality, teach students in accordance with their aptitude, give full play to students' initiative and creativity, and make math activity classes colorful and diversified.