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What will junior high school mathematics teach?
chapter one

Rational numbers (positive and negative numbers, addition, subtraction, multiplication and division of rational numbers, powers of rational numbers)

chapter two

One-dimensional linear equation (from formula to equation, practical problem and one-dimensional linear equation)

chapter three

A preliminary understanding of graphics (measurement of straight lines, rays, line segments and angles, comparison and operation of angles)

chapter four

Collection and collation of data

The above are the contents of the first volume of the first grade math book, and the key points of each chapter are in brackets.