The book starts from four aspects: innovation, efficiency, easy learning and enrichment, including step diagram and sidebar explanation. It collected 52 mathematical mental arithmetic methods for primary school students and 100 videos for explanation and guidance. The combination of teaching and practice can be divided into two volumes: "method course" and "super exercise", which can effectively solve the problem.
The book pays attention to practical results, expands thinking, adopts full-color and four-color printing, cultivates students' thinking ability, enhances their application consciousness, and masters learning methods, so that students are always "one step ahead" in mathematical calculation.
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