Chapter one algebra
Lesson 3 : Multiplying matrices
Lesson 4 : Determinant
Lesson 5 : Matrix inverse

chapter 3 trigonometry
Lesson 3 : Solving right triangle .
Lesson 4 : Elevation and depression angles .

Chapter 1 geometry
Lesson 3: geometrical Operations on vectors.

Chapter 2 geometry
Lesson 1 : Dividing line segment
Lesson 2 : Equation of the straight line