Live video classes with a real whiteboard
Chalkline is a live video classroom for one educator and up to 50 learners. Teach on a shared whiteboard and slides, call on raised hands one at a time, and let notes and recordings take care of themselves.
Algebra II: Graphing quadratics
24:1838 of 50
Ms. Rivera
...so the roots are where the curve crosses the x axis.
Raised hands
Class
Everyone joins muted.
What you get
Who speaks, what gets written down and who shows up on time are handled for you, so your attention stays on the lesson.
Learners raise a hand to speak and you see who asked first. One tap gives someone the floor, another takes it back and their mic switches off by itself.
Switch to discussion mode and everyone can talk at once. Teacher priority pauses student mics while you speak, then hands the room back.
Draw with pen, highlighter, shapes and text. Drop in a PDF deck and write straight on each slide while learners follow every stroke.
Turn on live notes and what you say becomes captions and a written transcript, saved with the class so nobody has to scribble.
Record the board, your video and every voice in one replay. Learners click any line of the notes to jump to that moment.
Plan a single class or a weekly series. Registered learners get a reminder the day before and a nudge 15 minutes before you start.
Phone + computer
On one laptop, video, sound, slides and drawing all compete for the same power. Pair your phone in seconds and each device does the job it is best at, so the board stays smooth and your video stays sharp.
LiveCamera and voice
How it works
Create a class, set the time and repeat it weekly if you like. Share one link or a 6 character code with up to 50 learners.
Registered learners get an email reminder and a browser notification, then another nudge 15 minutes before start.
Learners join muted. Use the board and slides, call on raised hands, open the floor for discussion and record if you want.
The recording, the written notes and the final board stay with the class, ready for anyone who missed it or wants a second look.
Your hand is up
You are second in line. The educator will call on you.
For learners
A phone, tablet or computer with a browser is all it takes. Sign in once and stay signed in.
Raise your hand and the educator sees you in the queue. When they allow you, your mic turns on.
Turn on captions to read along as the educator talks, helpful on a noisy bus or a weak connection.
After class the transcript, the board and the recording are waiting in your dashboard.
Questions
Each class has one educator spot and 50 learner spots. Once 50 learners are registered, the class shows as full and the join link stops taking new people.
No. Chalkline runs in a modern browser on phones, tablets and computers. Learners sign up with their name, email and a password, and stay signed in on that device.
Start the class on your computer and choose to use your phone for camera and voice. A code appears on screen. Scan it with your phone camera and your phone joins as your camera and microphone, while your computer keeps the whiteboard, slides, notes and recording.
By default everyone joins muted and raises a hand to speak. You can give the floor to one learner at a time, or open the floor so the whole class can speak at once. With teacher priority on, student mics pause while you are talking.
Upload a PDF or images. Most presentation tools, including PowerPoint, Keynote and Google Slides, can save a deck as a PDF. Each page becomes a slide you can draw on during class.
They are saved with the class. Everyone registered for the class can watch the recording, read the notes and look through the final board from their dashboard.
Live notes use the speech recognition built into the browser, which works in Chrome, Edge and Safari. Learners see the notes in any browser.
Create an account, schedule a class, share the code. Your learners get reminded, and you get a room that keeps order.