Project 03 · Web app
IB Econ Atlas
A bilingual study atlas for IB Economics, written from the syllabus up.
Why
I take IB Economics at Higher Level, and I study in two languages. That meant juggling an English textbook, Chinese notes and practice questions scattered across both. I wanted one place that follows the official 2022–2029 syllabus, explains each idea in Chinese and English, and turns reading into review, so I built it, for myself and for other bilingual IB students.
One rule from the start: the content is original. It is organised by the syllabus and indexed to textbook pages, but it is not a digitised or translated textbook.
What is in it
- 227 topics, 454 pages. Units 1 to 4, each topic written in Chinese and English, with HL-only material clearly marked.
- 695 review items. Flashcards, multiple choice and keyword short answers for every topic, scheduled with the FSRS spaced-repetition algorithm.
- 28 original diagrams. Supply and demand, externalities, AD–AS, the Phillips curve, tariffs, exchange rates and more, each with a text alternative.
- Search across languages. Type "opportunity cost", "机会成本" or a syllabus code and land on the same topic, with typo tolerance and SL/HL filters.
- Works offline. An installable web app that keeps progress in the browser and can export and import it.
Keeping it correct
Accuracy matters more than volume in a study tool. Each unit went through a content audit against the syllabus: SL/HL boundaries were corrected, formula explanations and practice items fixed, and missing topics filled. The audit and its evidence are published in the repository.
How it is built
The same way as PinTrace: I set the scope, the structure and the content rules, AI agents drafted the content and the code, and a full verification gate (content checks, type checks, tests, a production build and an offline audit) runs before anything is published.