One link, no accounts to hand out
Share the session link and each student joins with a display name. Nobody has to register, confirm an email or install anything on a school device.
For teachers
Explain it on a canvas the whole class can join.
A free online whiteboard for lessons and tutoring: draw while you explain, share one link so students join without creating an account, and keep the finished board as a PDF or image for the class notes.
Students join with a link · No account for the class · Export as PDF
Draw while you talk
Sketchy shapes, freehand strokes, text, images and a laser pointer for walking through a diagram live, with everyone's cursor visible on the board.
Keep the lesson afterwards
Export the board as PNG, JPG or PDF for handouts, or embed a read-only copy in the class page so students revisit exactly what you drew.
Ways teachers use it
Live explanation: build a diagram step by step while the class watches and asks in comments.
Group work: split students into sessions and drop into each board to see how it is going.
Tutoring: one link per session, screen-free enough to work on a tablet with a stylus.
Concept maps and flowcharts from a template instead of a blank page.
Revision material: the board becomes a PDF handout or an embed on the course page.
Frequently asked questions
Do students need an account?
No. They open the shared link, type a display name and can edit the board straight away. Only the person who created the session can pause or resume it.
Is it free for a whole class?
Yes. The canvas, sharing and live collaboration are free, and a session holds up to 100 participants at once.
Does it work on a tablet?
Yes. The canvas is touch-first: one finger pans, pinch zooms, and freehand drawing works with a stylus or a finger.
Can I reuse the same board next year?
Save the diagram to your account and it stays in your library with its version history, ready to duplicate for the next group.
Try it with your next lesson
Open a canvas, sketch the first diagram of the class and share the link. No sign-up, no licences, nothing to install.