What this is
The Learning Library is a shelf of eight free study tools that run entirely in your browser. Each one takes a big subject — the map of the world, the periodic table, a year of organic chemistry, the night sky — and turns it into short, repeatable drills. There is nothing to install, no account to make, and nothing to pay.
What you can learn here
- Geography Quiz — countries, capitals, and flags of the whole world, on the map and from memory.
- Periodic Table Quiz — element names, symbols, atomic numbers, and masses, eleven ways.
- The Reaction Atlas — all of Organic Chemistry I on one map: reagents, products, and multi-step synthesis.
- Type Invaders — an arcade typing shooter, with packs that teach world flags and all 88 constellations while you type.
- The Star Wheel — all 88 constellations on charts of the northern and southern skies.
- The Metabolic Map — glycolysis, the citric acid cycle, and the electron transport chain, enzyme by enzyme.
- The Practice Room — notes on the staff, ear training, rhythm, and the circle of fifths. Out loud.
- The Anatomy Theatre — bones, muscles, neural pathways, and organs on anatomical plates.
How it teaches
Every tool runs on spaced repetition. Miss a question and it comes back within a round or two; answer it quickly and correctly and the wait grows each time, so your practice keeps landing on whatever you know least. An item counts as mastered after five quick, unassisted correct answers in a row — and if you ever miss it again, it goes back into rotation. Most drills work in both directions, because a fact learned both ways is harder to lose.
The depth ranges widely on purpose: a six-year-old can play the single-letter typing pack while a university student drills organic synthesis next door. Take what fits.
Privacy
There are no accounts, no ads, and no analytics. Your progress is saved in your own browser’s local storage and never leaves your device. Clearing your browser data clears your progress — that is the whole database.
Take it with you
Several of the Library’s sets — world flags, all 88 constellations, world capitals — are also available as free ready-made decks for Flickdeck, a calm spaced-repetition flashcard app for iPhone, in its deck library.