- Symmetry in Functional Equations
- Introduction to Logarithms
- Slope-Intercept Form Linear Equations
- Complex Numbers in Geometry
- Synthetic Solution Using Equilateral Triangles
- Polygon Angle-Sum Theorem
- Introduction to Cartesian Coordinates in Geometry
- The Area of a Triangle
- Introduction to Calculus
- Simon’s Favorite Factoring Trick
- Pythagorean Triples in Elementary Number Theory
- Introduction to Modular Arithmetic
- Introduction to Trigonometry
- The Law of Cosines