Maths notes,
made to click.
A personal corner of the internet for KS3, IGCSE, A-Level, AP and university maths. Free notes, video walkthroughs, worked examples — open to anyone, forever.
Plain-English explanation, then examples that look exactly like the exam.
Six tracks, one growing library.
Each track auto-organises itself by topic tag as new notes go live.
A-Level Maths
Pure, Mechanics and Statistics — written alongside Edexcel and AQA specs.
IGCSE Maths
Cambridge & Edexcel IGCSE — core and extended, topic by topic.
AP Calculus & Stats
AP Calc AB/BC and AP Statistics — FRQs, MCQs and the intuition behind them.
KS3 & GCSE Foundation
Plain-English explanations, friendly visuals, small wins that build confidence.
初中数学
人教版与北师大版双线索整理，章节笔记与典型例题逐步上线。
University Foundations
Calculus, Linear Algebra, Probability — bridging A-Level into your first uni term.
Fresh from the desk.
New notes get tagged and sorted into their course automatically.
Simple, open, free.
Video + notes
Each topic pairs a YouTube/Bilibili walkthrough with concise written notes.
Auto-tagged
Tag a note with a course and topic — the catalog organises itself automatically.
Open comments
Ask questions, suggest corrections, leave a kind word — comments under every note.
Bilingual
Notes in English and 中文 where it makes sense — switch with one tap.