Mathematics is a rational subject. In the daily teaching process, we should strengthen the connection between mathematics and real life, and cultivate students'awareness of solving problems by applying mathematical knowledge. More importantly, we should open the classroom, expand the space for students to explore independently, strengthen the connection between new and old knowledge, cultivate students'reasoning ability and pay attention to the connection and difference between concepts, so as to improve students' ability to solve problems. Primary school cognitive pedagogy points out that the age and cognitive ability of primary school students determine their learning contents to be vivid, vivid and rich, and are closely related to students' real life. The pupil group is always full of inquiring desire and realistic spirit for realistic and specific mathematical problems.<br>
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