A math centre, from home · Grades 3–12
A small online class, twice a week. A table of classmates, every line by hand, and help drawn right on the page.
Two weeks free, then $99 a month. Or a tutored class, where Min teaches a small group, from $145.
Tonight's session
The same rhythm every time, so your child knows exactly what to do. Uni, the explainer built into PrepBox, is there the moment they’re stuck.
No videos to sit through. She writes every line herself.
The real app screen · example students
Why a classroom you can see
In a real centre, focus is catching. A video call loses that, so we built a room where kids can see each other work.
Ruby’s table, live
3. Solve 3(x − 2) = 15
Something changed between line 1 and line 2. Can you find it?
Meet Uni
A stuck child doesn’t wait for the teacher. Uni, the explainer we built into PrepBox, draws the idea right on their work.
Shaped by a year of Min’s recorded lessons.
Bar models, area models, algebra steps, on their own work.
Starts from the line they wrote. Math only.
One question, then the pencil goes back to them.
When a picture isn’t enough, Min steps in.
It asks one question, then stops. The next step is still your child’s.
Uni isn’t a chatbot you can download. We built it for this class.
The teacher
I’ve taught math for twenty years, to more than two thousand students. Great teaching matters, but I’ve learned it isn’t enough: kids sit up and engage when they’re with friends.
So I built PrepBox to teach a whole room the way I used to teach one student, with friends at the table and Uni explaining on every page while I go where I’m needed.
Min LeeFounder, PrepBox
Mike Woo
99% in Calculus
B.S. Physics and Math
Olivia Nie
7/7 in IB Higher Level Math
A.B. in Government
Kasra Rahmani92% in Calculus
B.S. Comp Sci & Statistics
Sonia Sharma
96% in Calculus
Medicine
Kimberly Seaman
99% in Calculus
B.S. Chemical Engineering
Esther Sohn
95% in Calculus
B.S. Foreign Services
Maxim Barron
91% in Calculus
B.S. Financial Mathematics
Andy Lee
100% in Calculus
B.S. Systems Engineering
Raymond Jang
5/5 IB Higher Level Math
B.S. Physics
Parents' lounge
Most trouble with algebra starts two years earlier. This is how we find it.
Plans
Same room, the same help on every page. The difference is how much Min teaches directly.
Most families start here
Your child works on their own math, with help drawn on their page.
Min’s roleRuns the room, comes when needed
$99a month, after two free weeks
When your child needs a person teaching
Min explains, asks and checks their work, in a small group.
Min’s roleTeaches your child’s group
$145a month, for 1 hour a week
More hours a week: 2 h $225 · 3 h $330 · 4 h $385 · 6 h $499 a month
Ask for a tutored seatYour child needs an iPad and a stylus. We can lend them for a small deposit.
After two free weeks, you decide whether to stay. Nothing is charged unless you continue.
Pick a session time that suits you. Study Hall starts with two free weeks.
Yes, where it matters. Min sees every line as it’s written and goes to whoever needs a person; Uni keeps everyone else moving. It isn’t one-on-one. It’s a small class where nobody sits stuck.
A chat app answers whatever it’s asked, usually with the answer. Here your child is in a class: a set time, friends working beside them, Min seeing every line, and explanations that stop before the answer.
Yes, underneath, to read handwriting and choose what to draw. But it isn’t a chat app: math only, drawn on your child’s page, shaped by Min’s lessons, and Min sees everything it shows.
Kids work harder when they can see friends working, and they come back to places that feel like theirs. What they do there is real math, by hand.
Study Hall: Grades 3 to 8. Tutored classes: Grades 3 to 12.
A first name and a character your child colours in. Never a face, a camera, a last name or marks.
An iPad and a stylus. We can lend them for a small deposit.
Math Centre
