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2026-C2 Class

Lessons

Chapter Week Code Topic Date
Strategy 1 S1 Try Small Cases 1 15 May
2 S2 Try Small Cases 2 22 May
3 S3 Case Bashing 29 May
4 S4 PROBLEM SET & FIRST CONTEST 5 Jun
Combinatorics 5 C1 Permutations and Combinations 1 12 Jun
6 C2 Permutations and Combinations 2 19 Jun
7 C3 Combinatorial Identities 26 Jun
8 C4 Bijections 3 Jul
9 C5 Probability 1 10 Jul
10 C6 Probability 2 17 Jul
11 C7 States and Applications 24 Jul
12 C8 COMBI REVIEW & CONTEST 31 Jul
Number Theory 13 N1 Primes and Factors 7 Aug
14 N2 GCDs and Euclidean Algorithm 14 Aug
15 N3 Number Bases 21 Aug
16 N4 Modular Arithmetic 28 Aug
17 N5 Applications of Modular Arithmetic 4 Sep
18 N6 Orders in Modular Arithmetic 11 Sep
19 N7 Chinese Remainder Theorem 18 Sep
20 N8 NT REVIEW & CONTEST 25 Sep
Algebra 21 A1 Algebra Fundamentals 2 Oct
22 A2 Graphing 9 Oct
23 A3 Arithmetic and Geometric Sequences 16 Oct
24 A4 Exponents and Logarithms 23 Oct
25 A5 Polynomials 1 30 Oct
26 A6 Polynomials 2 6 Nov
27 A7 Complex Numbers 1 13 Nov
28 A8 Complex Numbers 2 20 Nov
29 A9 ALGEBRA REVIEW & CONTEST 27 Nov
Geometry 30 G1 Angle Chasing 4 Dec
31 G2 Cyclic Quadrilaterals 11 Dec
32 G3 Lengths in Triangles 18 Dec
33 G4 Lengths & Areas 25 Dec
34 G5 Triangle Centres 1 1 Jan
35 G6 Triangle Centres 2 8 Jan
36 G7 Coordinate Bashing 15 Jan
37 G8 Trig Bashing 22 Jan
38 G9 GEOMETRY REVIEW & CONTEST 29 Jan
Strategy 39 S5 Visualisation 5 Feb
40 S6 COURSE REVIEW & Training & FINAL CONTEST 12 Feb