Scholia

Scholia are the notes readers once wrote in the margins of a book. Here the book is a lecture.

1. Hold the question. Every lesson opens with one objective. Keep it in mind while you watch.
2. Note at the second. Press N.Type in the note box. The lecture pauses and your note keeps its time. Start with ? for a question, ! for a key idea.
3. Practise beside it. Java 21 and Python 3.13 run next to every lesson. Pattern lessons carry Invariant's tests.
4. Review tomorrow. Questions and key ideas come back a day later. You answer first, then the original moment plays.
5. Earn the level. Each track measures you from 0 to 10, only on answers the app can check: quizzes, katas, the exit exam. Written answers help you learn; they never raise it.

The rule under each lecture is inked where you have watched, and underlined in red where you went back to watch again.

N

note at this second

Space

play or pause

← →

back or on 5 seconds

[ ]

slower, faster

1 2 3

notes, practice, quiz

⌘ K

search

Your notes live in this browser only. Download a backup · Restore

Built on ATELIER, our own interface library. Tests run on Compiler Explorer, your own programs on Wandbox.