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First-year math problem: Is the front and side of refrigerator the same shape?
Same.

Seen from the front and side, the refrigerator is rectangular.

Primary school mathematics is to teach children a series of knowledge about number, four operations, the calculation formula of figure and length, unit conversion and so on through textbooks, which lays a good mathematical foundation for junior high school and daily life calculation. Humans can continuously and consciously improve people's quality and cultivate people's excellent quality through appropriate knowledge carriers, and mathematics is such an important carrier. Mastering mathematics knowledge means understanding a modern scientific language and tools, learning a rational way of thinking and cultivating an aesthetic taste.