Grade 9 Math Textbook Version
Lesson2: Proportion.
Lesson3: Algebraic expressions.
Lesson4: The first degree equation has one variable.
Lesson5: The inequality of the first degree equation has one variable.
Lesson6: Frequency distribution.
Lesson7: Statistical average.
Lesson8: Probability.
Lesson9: Distance between two points.
Lesson10: Linear equations.
Lesson11: The first degree equation system has two variables.
Lesson12: Pythagorean theorem.
Lesson13: Circles and Lines.
Lesson14: Angle characteristics of the circle.
Lesson15: Thales's theory.
Lesson16: Same triangle.
Lesson17: Polygon.
Lesson18: Solid.
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