1, positive and negative numbers

2. Rational number

3. Addition and subtraction of rational numbers

4. Multiplication and division of rational numbers

5. Power of rational number

Chapter II One-variable Linear Equation

1, from formula to equation

2. From ancient algebra books.

3. From the "problem of buying cloth"

4. Re-explore practical problems and linear equations of one variable.

The third chapter is the preliminary understanding of graphics.

1, color graphics

2. Lines, rays and line segments

3. Angle measurement

4. Angle comparison and operation

Chapter IV Data Collection and Arrangement

1. What kind of animals do students like best?

2. Vision survey of primary and secondary school students.