A whiteboard is not a document. It is a visual conversation, and it can be drowned out by noise as easily as a room full of people. Most lessons that feel hard to follow are not failing because the explanation is weak. They fail because of small board habits: a diagram with no labels, one colour doing four different jobs, a worked example that has already been wiped away. None of these are dramatic. All of them cost attention. Here are ten that show up again and again, with the fix for each.
Cramming everything onto one board
1. Writing everything you say. The board should carry what the ear cannot. If you narrate a definition and also write the full sentence, you slow the lesson down and hand students two competing versions of the same words. They read, you talk, and the two drift apart.
Take a grammar point. Instead of writing “The present perfect describes an action that began in the past and continues into the present, for example I have lived here for five years,” put the pattern and one clean example on the board:
have / has + past participle
I have lived here for five years. (2020 → now)
Keep the explanation in your voice, where it belongs.
2. Never clearing anything. The board fills up, the current example ends up in the bottom corner, and students are quietly scanning upward trying to work out which part matters. Give yourself two areas: one live space for what you are doing now, one reference space for things worth keeping. When something stops being current, move it to the reference side or a second page. Clearing is part of teaching, not housekeeping.
Zoom levels that leave everyone guessing
3. Writing at your own zoom level. You are working on a large monitor two feet from your face. A student may be watching on a phone on a bus. If a label needs pinching to read, it is decoration. Before the lesson, shrink your window to roughly phone width and check the smallest text and the thinnest pen stroke you plan to use. Then set your default pen size to something that survives that test.
4. Zooming in so far that the map disappears. You dive into one corner of a diagram to add a detail, then carry on talking about the whole picture while the screen still shows a fragment. Students lose the sense of where they are. Say what you are doing out loud — “I’m zooming into the top-left box” — make the change, then zoom back out and point to the part you just edited. The zoom is a camera move, not a destination.
Colour used as decoration instead of meaning
5. Five colours and no system. When everything is highlighted, nothing is. Colour earns its place when each shade has exactly one job and students can predict it without asking. A workable scheme:
- One colour for structure: headings, boxes, the skeleton of a diagram.
- One colour for whatever you are adding right now, so the eye knows where to land.
- One colour for corrections and common errors, used sparingly enough to stay meaningful.
- Everything else in a dark neutral that reads cleanly against the background.
Two practical checks. First, contrast: pale yellow on white looks fine on your screen and vanishes on a projector or in a bright room. Second, colour blindness: don’t let red and green alone carry a distinction — pair the colour with a label, an underline or a shape. If a student can only see the board in greyscale, the meaning should still hold.
A useful test for any board: cover the colours and see whether the structure still reads.
A board with no map
6. Starting in the middle. Without fixed zones, a board wanders. You begin a diagram at the top, run out of room, restart in the corner, add an arrow that points at nothing in particular. Split the surface once and keep it: a title and lesson aim at the top left, working space in the middle, a parking area on the right for questions and side notes you promise to come back to. Keep the layout consistent from week to week and students stop hunting for information.
7. Unlabelled diagrams and untitled pages. A quick sketch with three arrows and no words means little ten minutes later, and nothing at all to someone who joined late. Label the axes, the boxes, the arrows. Write the title at the top: “Present perfect — three uses”, “Cell division, stage two”, “Problem 4, part b”. It costs ten seconds and it turns a scribble into something a student can photograph and still understand that evening.
Writing and talking at the same time
8. Narrating over your own handwriting. Two channels competing: your hand is drawing one thing while your voice describes another, and there is always a small lag between them. Students follow neither comfortably. Write first, then talk about what you wrote. Or explain first, then write the summary. Either order works; doing both at once rarely does. And don’t fear the pause — a few seconds of silence while you draw a graph is thinking time for the class, not dead air.
For anything longer than a short line, type it before the lesson and annotate around it. Your handwriting is fine; your handwriting at speed, at 40 percent zoom, is a different matter.
Erasing too early
9. Wiping an example before it has done its job. The pattern is familiar: you solve an equation in the top corner, then clear it to make room for the next one. But the next problem is exactly where students want to compare — what changed, what stayed the same. Keep worked examples visible, number them, and add pages rather than erasing. If the board is getting crowded, that is a layout problem, not a reason to delete the model answer.
Then save it. Export the finished board as a PDF or image at the end of the lesson and share it. It is the cheapest revision resource you will produce all week, and it takes one click.
Leaving students as spectators
10. Nobody else touches the board. A board only you write on is a slide deck that wobbles. Hand over the pen: ask one student to label the diagram, another to circle the error, a third to draw the next step while the class talks them through it. In a larger group, ask for a prediction and write it on the board before revealing the answer. That single move turns the board into a record of what the class thought, not just what you know — and students defend their own writing in a way they rarely defend a slide.
A five-minute routine that fixes most of this
None of these habits needs a new tool or a longer lesson plan. They need a short setup you repeat until it is automatic.
- Before the lesson, finish one sentence: what should be on the board by the end? If you can’t answer it, the board has no job.
- Set up the frame before students arrive — title, zones, maybe the diagram outline with empty labels.
- Check legibility in a narrow window, or on your phone if you can.
- Pick three colours at most and decide what each one means.
- At the end, export the board and look at it as a student would. Anything you can’t decode in five seconds should have been labelled.
Boards fail quietly rather than dramatically, which is why they are easy to neglect and easy to improve. Pick the two habits from this list that sound most like your last lesson and change only those this week. The difference in how closely students follow you will be noticeable before you have fixed the rest.
Photo: geralt / Pixabay