**Spring 2019:**

- February 9: Triangle Geometry
- March 2: Special Centers of Triangles
- March 9: More Special Properties of Triangles
- March 16: More Triangles
- March 23: Quadrilaterals
- Days between above and below, exclusive, were covering geometry
- April 13: Geometry

Summer 2018:

- June 16: The Integers, Prime and Composite Integers
**(1 is not a prime!!)**: Problems, Lesson Notes - June 23: Divisors, Multiples, and Prime Factorization: Problems, Lesson Notes
- June 30: More on Divisors, Factorials: Problems, Lesson Notes
- July 7: Algebra (...) and Number Bases (!): Problems, Lesson Notes
- July 14: Units Digits, Decimals and Fractions: Problems, Lesson Notes
- July 21: Modular Arithmetic and Divisibility Rules: Problems, Lesson Notes
- July 28: Systems of Linear Congruences: Problems, Lesson Notes
- August 4: Systems of Linear Congruences
- August 18: MathCounts Countdown!