The world is big, and there are important contributions of mathematics everywhere. Cultivating students' mathematical consciousness and ability to solve practical problems with mathematical knowledge is not only one of the goals of mathematics teaching, but also the need to improve students' mathematical quality. In teaching, let students get in touch with reality, understand life, and understand that life is full of mathematics, and mathematics is around you.
For example, in the introduction of "the meaning and basic nature of proportion", I designed a passage like this: Do you know that there are many interesting proportions in our human body? The ratio of the length of the fist to the length of the sole is about 1: 1, and the ratio of the length of the sole to the height is about 1: 7 ... It is very useful to know these interesting ratios. If you buy socks in the store, just wrap them around your fist for a week and you will know whether they are suitable for you. If you are a detective, as long as you find the footprints of the criminal, you can estimate the height of the criminal ... these are all interesting proportions that make up the body proportion. Today we will learn "the meaning and basic nature of proportion";
In addition, teachers can also design some practical assignments such as "investigation", "experience" and "operation" according to the age characteristics of students, so that students can consolidate their knowledge and improve their abilities in all aspects. For example, before teaching the relationship between unit price, quantity and total price, students can be arranged to be a small investigator and complete the following form:
Cucumber, cabbage, radish and pork
Unit price (yuan)
Quantity (kg)
Total price (yuan)
In this way, students have a perceptual knowledge of what they have learned, which slows down the slope of learning and helps students deeply understand the relationship between unit price, quantity and total price. For another example, after learning the stability of triangles, students can observe where the stability of triangles is used in their lives; After learning the knowledge of circle, ask the students to explain why the shape of the wheel is round and triangular from a mathematical point of view. Students can also find out where the center of the pot cover and washbasin is; ..... This greatly enriches the knowledge students have learned, and makes them really realize that mathematics is everywhere around them, and mathematics is in our life, which is not mysterious. At the same time, we unconsciously realize the true meaning of mathematics, thus arousing students' feelings of loving, learning and using mathematics since childhood, promoting students' thinking to develop into a scientific way of thinking, and cultivating students' consciousness of consciously applying what they have learned to real life.