Can You Do Online Maths Tutoring on a Phone?

What genuinely works

More than parents expect. Joining a meeting from a link, camera, microphone, raising a hand, chat, and viewing whatever the tutor is sharing are all first-class features of the mobile apps rather than afterthoughts. A student can attend a whole class from a phone and miss nothing that is spoken.

The audio is often better than a laptop's, because a phone is designed around a voice call and a cheap laptop is not. With any pair of earphones plugged in, a phone gives the tutor a clearer signal than the average built-in laptop microphone in a room with a fan running.

What breaks, and roughly when

Reading fails first. A shared whiteboard holding six lines of algebra is legible on a 14-inch screen and is not legible on a phone held at arm's length. The student zooms in, the tutor writes something outside the zoomed area, and the student spends the next thirty seconds hunting rather than following.

Writing fails next. Annotating with a fingertip on a phone produces characters nobody can read, including the person who wrote them. Anything requiring typing — an answer box, a shared document, a practice platform — becomes slow enough that the student stops volunteering answers.

Then the phone itself intervenes. An incoming call takes over the screen. A notification pulls the app to the background and the outgoing video cuts. Ninety minutes of video on a phone will get warm, and a phone that is warm and unplugged will be at a low battery before the class ends.

• Put the phone on Do Not Disturb before the class, not during it.
• Plug it in. A ninety-minute video call is one of the heaviest things a phone does.
• Use earphones — they fix the echo and the microphone at once.
• Have the paper and pen out before joining, because there is no second window to open.

The phone-and-paper setup, and the trade inside it

Prop the phone on a stand or a stack of books so the lens looks down at the exercise book, and the tutor stops guessing. They see the pen move, the crossings-out, the moment the student hesitates before writing a sign. For a child in grades 1 to 5 that view is worth more than everything else on the call, because at that age almost all the diagnostic information is in the working.

The trade is explicit: while the phone is over the page, the student cannot see the tutor's board. In practice a good tutor works with this rather than against it — talk while the student writes, then ask them to pick the phone up when there is something to look at. It is a rhythm, and it is not a problem for young children, who should be writing far more than they are watching.

It is a real problem from about grade 8 onwards, where the tutor's board carries content the student needs to copy and follow.

Two devices solve it properly

The setup that removes every objection is a laptop for the class and the phone joined to the same meeting as a second camera aimed at the page. The student watches the board on the laptop and writes under the phone, and the tutor can pin whichever view they need.

One rule makes it work: mute the microphone and speaker on the second device. Two devices with live audio in the same room produce feedback loud enough to end the class. Join the phone with the microphone off and never turn it on.

This costs nothing if both devices already exist, which is the common case. It is also the setup we ask for once a student starts working through past papers, and we say so before enrolment rather than three weeks in.