What your teachers get
A teacher page for every lesson
Full worked answers, what each common wrong answer tells you about the student's thinking, a timed plan for the hour, and questions at three levels for the board.
MYP assessments, A to D
Every one of the 45 MYP units has six tasks across criteria A to D, with markschemes, exemplar answers, differentiation and EAL support. Teacher-only, so every task stays unseen until you set it.
One connected course
The Skill Tree links each idea from Year 7 to Year 13, so a department can see where a gap in Year 9 shows up in the Diploma.
Try it with a class first
The first lesson of every unit is free, so the simplest test is to teach one this week. These teacher pages are open without a licence:
- MYP Year 8: ProbabilityThe whole unit: six lessons, their teacher pages and all six assessment tasks with markschemes
- MYP Year 10 Extended: Functions, quadratics and transformationsThe whole unit, with its assessment tasks and markschemes
- IB Diploma: Correlation and regressionApplications and Interpretation, and Analysis and Approaches
- IB Diploma: The binomial distributionApplications and Interpretation, and Analysis and Approaches
- IB Diploma: The normal distributionApplications and Interpretation, and Analysis and Approaches
What it looks like inside
Real pages from the licence, exactly as a teacher sees them. Each picture opens the page it came from.
Prices
Anything added during your twelve months is included. Full refund if you email within 30 days.
$49 one payment for twelve months
- Every teacher page, all 423 lessons
- Every MYP assessment with markschemes
- For one named teacher
$349 one payment for twelve months, nothing renews
- Everything in the one-teacher licence
- For every maths teacher at one school
- Every lesson for every pupil, with one school code
- Pay by card, or by invoice on request
Card checkout is handled by Gumroad, which issues the receipt and any VAT invoice. Prices are in US$; Gumroad shows your local currency at checkout. Sold by Keith Spencer, trading as KS Maths, Bangkok, Thailand.
Give your students who need extra support their own route back to the gap
Buy codes for a support group. Each student gets their own code that opens every lesson, Year 7 to the Diploma, so they can go back to the year where the gap started. The Skill Tree shows you where that is: follow any topic back to the idea it rests on.
Every size includes your own teacher pages for every lesson, and the codes appear the moment you pay.
After paying, open ksmaths.com/codes and type the email you paid with and the licence key from your receipt: your codes are listed, ready to print. One payment. Nothing renews. Full refund within 30 days.
How you know it is right
At the last full check of the site, on 20 October 2026, 40 separate checks ran across every page, including 314,638 recomputed answers in 73 verifier files. Every one passed: a single failure stops anything being published.
Errors reported and fixed: 2, latest 18 October 2026. Every fix is listed, with its date, in the public error log.
Pilot a unit free for 30 days
Heads of maths can try the full teacher side before spending anything. Email the school name and the unit you want to pilot, and you get an access code that opens every teacher page and assessment for 30 days. No payment details, and nothing renews.
Ask for a pilot codeBuying for a school
Can we pay by invoice or purchase order?
Yes. Email hello@ksmaths.com with the school name, the billing contact and any purchase order number. You get an invoice within one working day, with a card payment link through Gumroad.
What does the school receive?
A receipt from Gumroad and a start-here PDF explaining how teachers sign in. From that moment every teacher page and every MYP assessment with its markscheme is open for twelve months, including anything added during the year.
How do teachers get in?
Open any teacher page, or choose Teacher sign-in at the top of the site, and type the email used at checkout. With the school licence, share that email with your maths teachers; each types it on their own device.
Refunds
Email within 30 days of paying for a full refund. No questions.
VAT and receipts
Gumroad is the merchant of record for card payments: it charges any VAT or sales tax due in your country and issues the receipt.
Questions
What do students see?
The first lesson of every unit, free. With the school licence, every lesson, with no student accounts: pupils open them with a school code. They never see teacher pages, markschemes or assessment tasks.
Is this official IB material?
No. It is independent lesson and assessment material written by a head of mathematics. Nothing reproduces IB syllabus or criterion text; the MYP descriptors are paraphrased, so check them against your school's current guide.
Preparing for a school inspection in Dubai?
Something else?
Email hello@ksmaths.com.
The school platform
Student practice in which every student gets their own numbers, marked as they work, with a class tracker for teachers and printable reports for parents. It is being prepared for other schools and is not available yet. A small number of founding schools will pay $1,500 for the first year.
Registering interest commits you to nothing.