Flashcards by subject: every field cards differently

Each guide carries a working paste tool to try the idea now.

Why card craft is subject specific

The one fact per card rule is universal; what counts as a fact is not. In biology a process step is a fact; in chemistry an exception to a trend is the fact worth most; in physics the condition under which a formula applies outranks the formula; in anatomy the relation between structures is the fact and words alone barely hold it. Guides that ignore this teach card mechanics without card judgment, and judgment is where decks are won.

The science guides

Biology cards processes, structures and their pairings, with the classic trap of stuffing a whole pathway onto one card. Chemistry runs on ions, trends and the exceptions that exams actually probe. Physics cards quantities, units and validity conditions, and treats bare formula cards with deserved suspicion. Anatomy is the image heavy case, where photographed atlas pages become the deck's spine.

The math and mind guides

Psychology binds every claim to its researcher and its study, because attribution is what the exams grade. Statistics cards which test fits which design, the decision formula sheets never provide. Calculus splits rule fluency from theorem hypotheses; algebra builds error cards from your own recurring mistakes; geometry refuses any theorem without the condition that licenses it.

The history and place guides

World history cards causes and cross regional meanwhile questions rather than naked dates. US history binds cases to holdings, amendments to scenarios, documents to claims. European history cards every ism with its claim and its enemy, every treaty as concrete edits. Art history is image first, the attribution stack on photographed plates, and geography cards each model's stages with the limits exams actually probe.

The systems and language guides

Economics cards what shifts each curve and the policy chains between cause and outcome. Computer science cards what code does, operation costs with reasons, guarantees with conditions. The language trio splits by battlefield: Spanish fights mood triggers and verb families, French fights the gap between spelling and sound, and English vocabulary fights the difference between near synonyms.

The professional guides

Medical terminology dissects every long word into a few hundred reusable parts. Pharmacology cards classes and suffix families so the drugs come along. Microbiology walks identity chains from stain to story, nursing cards values, priorities and safety gates, law puts one element of each rule on each card, and music theory drills the arithmetic under the art.

One deck per exam scope, not per mood

Decks work when their boundary matches something real: a course, a block, an exam. A deck named biology that mixes three courses' material returns cards without context; a deck per course keeps every return answerable. Inside the deck, tags carry the finer slicing, chapter, system, theme, so exam week can drill one slice without splitting the deck. The boundary decision costs one minute at creation and pays all term.

Make cards from material, not from memory

Cards written from memory encode your current misunderstandings; cards made from the textbook PDF, the photographed page, the lecture screenshot inherit the source's accuracy. The app's pipeline exists for exactly this: PDFs, photos and screenshots become decks with the reasoning attached, and the schedule handles the returning. The guides below decide what deserves a card; the pipeline builds it.

The paste tool on every guide

Each subject guide carries the browser tool above: paste lines, get cards, no account, nothing uploaded. It is deliberately small, rule based with a twenty card cap, because its job is letting you feel the format before committing a course to it. The judgment the guides teach applies identically whether the cards come from the paste box or the full pipeline.

Last updated: 2026-08-15