BI & BM · REVIEWED EDITION 2.3.1
Vocabulary Recall Lab
MANDARIN · 华语
Teacher settings & backups
Vocabulary evidence & review
Editorial bands preserve earlier lesson groupings. They are not verified SK, SJK(C), Cambridge or American year-level equivalences.
How to use
Physical: one view; press and hold to reveal, then release to hide. Online: the teacher answer stays visible. Open Student Presentation and share only that window in Zoom. Reveal and navigation synchronise within the same origin and browser profile; this is not cross-device synchronisation.
The teacher view is private because you keep it off the shared screen. There is no sign-in access restriction. Vocabulary and source code are public. Students need no device during your lesson.
Wait for “Offline files ready”, then test without a connection. Progress stays on this device; clearing browser site data removes it. Export a backup before clearing data. No AI service, account, camera or microphone is required.