Most maths videos I am sent for packaging arrive with a thumbnail that looks like the end of a lecture, right, a whiteboard covered in working, three equations stacked on top of each other, a graph in the corner and a title in big letters over the top, and the creator is usually a little puzzled about why it is not getting clicked, because everything the video covers is right there on the thumbnail. That is exactly the problem, right, because a thumbnail full of working looks like homework, and the person scrolling past did not open YouTube to do homework, they opened it to be surprised by something, and maths is full of genuinely surprising things if you show them one at a time.
At ClickTheory, which is the thumbnail and title side of Pixel Samy, we package channels across education, science and explainers, and maths sits in a really interesting spot among them, because the subject has a reputation for being dry and yet some of the most loved explainer content on the whole platform is maths. What separates the two, in my experience, is almost never the quality of the explanation. It is whether the packaging picks one object, one equation, one shape, one number, and makes the viewer want to know why it is true.
What should a math thumbnail actually show?
A math thumbnail should show one mathematical object, a single equation, a single shape, a single number or a single graph, large and clean, so the viewer's eye has one thing to wonder about instead of a page to read.
Think about what makes someone stop on a maths video, right, it is rarely the topic name, nobody stops because a thumbnail says integration by parts. They stop because something looks strange or beautiful or wrong, a sum of positive numbers that seems to equal a negative, a shape that should not tile but does, a circle drawn inside a square with a question mark where the answer should go. That single object creates a small itch, and the click is the viewer scratching it. Put five objects in the frame and the itch spreads too thin to feel.
So when I sit with a maths video, I am looking for the one moment in it that made the creator excited enough to make the video in the first place, the identity, the proof step, the picture that suddenly makes the idea obvious, and that becomes the thumbnail. Everything else, the context, the build up, the extensions, stays in the video where it belongs.
Why one equation beats a board full of working
There is a design reason and a psychological reason, and they point the same way. The design reason is size, a phone thumbnail is small, and maths notation is fussy, exponents, subscripts, fraction bars and Greek letters all shrink badly, so one equation set large enough to read is about the maximum the frame can hold. The psychological reason is that a full board answers the question while a single equation asks it. A board of working says here is the solution, take it or leave it, while a single surprising statement says here is something that sounds impossible, do you want to see why. Stay with me on this, because it sounds backwards at first, the less maths you put on the thumbnail, the more mathematical the video feels.
How do you create curiosity in a math thumbnail without clickbait?
You create honest curiosity by showing something true that sounds surprising and leaving out the explanation, which is a real question the video answers, rather than promising a result or a shock the video does not deliver.
Curiosity is the native fuel of maths content, right, and it is also very easy to abuse. The honest version is showing a true statement that feels wrong, a result that defies intuition, a picture that hides a pattern, and letting the video resolve it. The dishonest version is promising something the maths does not support, a trick that will make anyone a genius, a secret teachers do not want you to know, a problem that supposedly nobody can solve when plenty of people can. The catch here is that maths audiences are some of the most precise viewers on YouTube, and they notice instantly when a thumbnail overstates, then they say so in the comments, and that reputation follows a channel around.
I wrote about where the line sits in more general terms in the curiosity gap in thumbnails, and the point at which it tips into something worse in when curiosity becomes clickbait. For maths the rule I use is simple. If the thumbnail makes a claim, the video must prove it, and if the thumbnail asks a question, the video must answer it fully, not just gesture at it.
If the thumbnail says something is true, the video had better prove it, because maths viewers check.
Should the presenter's face be in a math thumbnail?
It depends on how the channel is built, because a personality led maths channel benefits from a recognisable face reacting to the object, while an animation led or faceless channel does better letting the object fill the frame on its own.
When a channel is built around a person, a teacher with a following, a tutor whose students come back to them by name, the face helps, because recognition carries a lot of trust, and a genuine reaction next to the equation, puzzlement, delight, disbelief, tells the viewer how to feel about it. What I avoid is the face taking over, the shocked open mouth filling half the frame with a tiny equation in the corner, because then the thumbnail is about the face and the maths becomes decoration. When a channel is built around visuals, animated geometry, clean diagrams, the object should be the hero, and adding a face often just crowds it. To be very honest, a lot of the best maths thumbnails I have seen have no person in them at all, just a beautifully drawn shape on a dark background and a short phrase.
Typesetting maths so it reads at phone size
This is the unglamorous part, right, and it decides more clicks than people expect. Equations exported straight from typesetting software look elegant at full size and thin and spidery in the feed, because the strokes are designed for print, not for a rectangle a few centimetres wide. So our designers rebuild the key equation in the thumbnail rather than pasting it, with heavier strokes, generous spacing between symbols, exponents set larger than strict convention would allow, and high contrast against the background, usually light notation on a dark ground or dark on a clean light one. The approach to type in general is in our thumbnail fonts guide, and maths adds the special challenge of symbols that most display fonts do not even include.
Shapes need similar care, right, since thin construction lines disappear, so the important line, the one that carries the insight, gets thickened and coloured while the scaffolding fades back. A single accent colour for the part that matters, a highlighted angle or a coloured region, guides the eye far better than a diagram where every line has equal weight.
Do problem walkthroughs and big idea explainers need different packaging?
They do, because people searching for a walkthrough have a specific problem to solve, while people browsing for an explainer want to be surprised, so one thumbnail should look like an answer and the other like a question.
A walkthrough viewer, right, is often a student the night before an exam, typing the exact problem type into search, and their thumbnail should show the problem itself clearly and promise a clean method, with the title doing most of the search work by naming the topic and level. An explainer viewer is browsing, and the thumbnail should carry the curiosity, the single strange object, while the title adds the hook. The broader trade off between clarity and intrigue for teaching channels is in education channels and the clarity trade off, and our page for education channel thumbnails covers the rest of that family. Maths also shares a lot with science channels, where the same honesty rule applies, which is the theme of thumbnail design for science channels, and with puzzle and strategy channels, where a single board position does what a single equation does here, as I wrote in chess and board game thumbnails.
How a maths video moves through our process
Each maths upload is owned by one strategist and one designer, and the strategist's first job is reading the script or watching the draft to find the one object worth putting in the frame, which is usually something the creator says with the most energy. We write around a dozen title options against formats we know hold up, because maths titles have to balance curiosity for browsers with the plain topic words students search for. The designer sketches three or four rough directions, often one equation led, one shape led and one face led, so the creator can see the choices side by side before anything is polished.
The finished thumbnail is checked at real feed size next to the kind of videos it will compete with, because a beautiful equation that does not read in the feed is not worth anything. After it goes up, I would watch click-through on search impressions separately from browse, since a walkthrough lives on search and an explainer lives on the home feed, and Google's page on how impressions and click-through are counted explains which views even count toward that number.
What it costs, and when a maths channel should not hire us
For a maths channel posting weekly, the base is our pack of eight thumbnails at $250, with as many revisions as each one needs and title help on every video. The add-on I would point a maths creator to is the written title service at $25 per video, which gives you twelve title options with our recommendation, because in maths the gap between a title that gets searched and a title that gets ignored is often one or two words. Everything else is on services.
And when should you not hire us? If your channel is a library of walkthroughs for your own students and they find the videos through a link you send them, packaging matters far less, and a clean, consistent template you make yourself is probably all you need. If you post once a month and love the design side, the one object rule in this post will take you a long way on its own. Where I think ClickTheory earns its keep is a maths creator publishing every week who wants strangers, not just existing students, to find the videos, and who likes knowing a style was tried on uploads from the Pixel Samy group's own channels before it touches theirs.
Show the itch, not the answer
The best maths thumbnails do what the best maths teachers do, they put one strange, true thing in front of you and wait for you to ask why, and they trust the video to do the explaining. Pick the single object, draw it so it reads on a phone, keep every claim provable, and let the curiosity be real. So yeah. That's my way of saying it.