Build a "life classroom" and get out of the classroom, so that I can discover, explore and practice mathematics in real theme activities. In the study of knowledge, I am also emotionally satisfied. I took the initiative to participate and practice in person, which not only consolidated my knowledge, but also gained a sense of accomplishment, improved my ability to solve practical problems and established my willpower not to be afraid of setbacks and overcome difficulties.

After learning comparison and proportion, you can organize me to measure the height of a big tree in school. At first, I may be at a loss because the tree is too high. At this time, the teacher inserted a bamboo pole beside the tree, and the shadow of the tree and the shadow of the pole were clearly visible under the sunlight. At this time, the teacher asked, "What is the relationship between the length of the bamboo pole and the length of the shadow of the pole? Can you calculate the height of the tree from this? " After observing and thinking, I will find that the length of the pole: the shadow length of the pole = the height of the tree: the shadow length of the tree, thus calculating the height of the tree.

After learning the decimal multiplication and division method, the teacher can let me go home to collect information about telephone charges and mobile phone charges, and use the knowledge of decimal multiplication and division and discount to solve problems related to telephone charges.

Through personal experience, I feel that mathematics is around, and I really appreciate the application of calculation in life. In the long run, it can not only improve my interest in learning calculation, but also cultivate my ability to discover mathematics and solve practical problems in life, and improve my ability to comprehensively use knowledge. Therefore, teachers should try their best to create conditions for using computing knowledge, give me opportunities for practical activities, and gradually cultivate my application consciousness.