The service worker prepares the course library and reusable study assets after the first online visit. Progress stays in local storage.
Our approach
Access is part of the curriculum.
A lesson is not accessible if it disappears with the network, assumes one computer per learner, or needs equipment the classroom does not have. Binary Tree starts with those realities.
7practical learning pathways
42current, distinct lecture decks transformed into searchable notes, practice, flashcards, and quizzes—with direct source links for instructors.
Design principles
Human learning is rarely a straight line.
Binary Tree leaves room for wrong turns, shared screens, slower connections, and the small wins that make a skill stick.
The study companion receives the selected lesson’s summary, key ideas, and activity. It is instructed to stay within that context.
Activities include paper-first and pair-work alternatives so the learning goal survives a missing device, printer, or connection.
A clear language switcher shows one English, Kiswahili, or French overview at a time. Draft translations remain marked for native-speaker review.
Lessons live as Markdown in the repository. New files are discovered at build time, keeping curriculum work separate from interface code.
AI features have fast deterministic fallbacks, protect server keys, constrain response length, and retain a meaningful offline experience.
Meet the people carrying the mission.
Explore the team and partner network, or apply to contribute.