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IdahoAMC

AMC 8 lessons

Slides from my prep sessions for the 2026 AMC 8.

Algebra & Number Theory

  1. Ratios, Rates, and Proportions
  2. Percents and Percent Change
  3. Averages and Weighted Averages
  4. Linear Equations and Word Problems
  5. Systems of Two Equations
  6. Divisibility Rules and Prime Factorization
  7. GCD, LCM, and Repeating Events
  8. Remainders and Units Digits

Geometry

  1. Angles, Parallel Lines, and Polygons
  2. Triangles and the Pythagorean Theorem
  3. Areas of Triangles and Quadrilaterals
  4. Circles, Arcs, and Sectors
  5. Shaded Regions and Composite Figures
  6. Similar Figures and Scale Factors
  7. Coordinate Geometry
  8. Solids: Surface Area and Volume

Combinatorics

  1. Systematic Listing and the Multiplication Principle
  2. Permutations and Arrangements
  3. Combinations and Choosing Groups
  4. Complementary Counting and Overcounting
  5. Venn Diagrams and Inclusion-Exclusion
  6. Introduction to Probability
  7. Counting Paths and Pascal's Triangle
  8. Casework and the Pigeonhole Principle