2026-O1 Class

Lessons

Chapter	Week	Code	Topic	Dates
Proofs	1	P1	Introduction to Proof	Feb 10
	2	P2	Contradiction	Feb 17
	3	P3	Induction	Feb 24
Strategy	4	S1	Try Small Cases 1	Mar 03
	5	S2	Try Small Cases 2	Mar 10
	6	S3	Pigeonhole Principle	Mar 17
	7	S4	Extremal Principle	Mar 24
	8	S5	REVIEW & CONTEST	Mar 31
Combinatorics	9	C1	Counting	Apr 07
	10	C2	Bijections	Apr 14
	11	C3	Double Counting	Apr 21
	12	C4	Invariants	Apr 28
	13	C5	Graph Theory	May 05
	14	C6	REVIEW & CONTEST	May 12
Number Theory	15	N1	Divisibility and Primes 1	May 19
	16	N2	Divisibility and Primes 2	May 26
	17	N3	Modular Arithmetic 1	Jun 02
	18	N4	Modular Arithmetic 2	Jun 09
	19	N5	Diophantine Equations	Jun 16
	20	N6	REVIEW & CONTEST	Jun 23
BREAK (3 weeks)
Algebra	21	A1	Algebraic Manipulation	Jul 21
	22	A2	Functions and Graphing	Jul 28
	23	A3	Polynomials	Aug 04
	24	A4	Inequalities	Aug 11
	25	A5	Functional Equations 1	Aug 18
	26	A6	Functional Equations 2	Aug 25
	27	A7	REVIEW & CONTEST	Sep 01
Geometry	28	G1	Angle Chasing	Sep 08
	29	G2	Length Chasing	Sep 15
	30	G3	Strategies for Geometry	Sep 22
	31	G4	Radical Axis	Sep 29
	32	G5	Triangle Centres	Oct 06
	33	G6	Coord Bashing	Oct 13
	34	G7	REVIEW & CONTEST	Oct 20
Strategy	35	S6	Backsolving	Oct 27
	36	S7	Notation and Representation	Nov 03
	37	S8	Visualisation	Nov 10
	38	S9	Problem Exploration	Nov 17
	39	S10	REVIEW & PROBLEM SET	Nov 24
Contest	40	T1	FINAL CONTEST	Dec 01