The bridge from able at primary to excelling at secondary.
A complete, structured maths programme for children aged 9–14 — the full Simple to Complex textbook, self-marking quizzes, and a membership that grows every term. Built by teachers with forty-five years in the classroom.
Opening to founding families — September 2026
A whole programme, one subscription.
The textbook and quizzes are ready on day one — and the library keeps growing every term.
The online textbook
Every Learning Tier of Simple to Complex Mathematics in a clean online reader — concepts built simple-to-complex and systematically revisited, on any device.
Self-marking quizzes
Hundreds of questions with proper maths entry — fractions, powers — marked instantly against model answers, so your child gets feedback the moment they finish.
A membership that grows
Worked-example videos, termly assessments and fresh practice added through the year — a living programme, not a static archive.
For children who find maths easy — and deserve to find out how good they can be.
Ages 9–14: the last years of primary and the first of secondary, when able children are most often coasting. Home-educating families get a complete structured spine; school families get the stretch the classroom rarely has time for.
One price. Everything in.
The Booster Course
- The complete online textbook — every Learning Tier
- Self-marking quizzes for every chapter, with instant feedback
- New material through the year: videos, assessments, fresh practice
- One membership for the whole family — siblings included
- Cancel any time; keep access to the end of your paid year
- 14-day full refund if it isn't right for you
£79 a year, per family. Annual, one payment.
Worth comparing
A private maths tutor in the UK typically charges £30–50 an hour. The Booster Course costs less than two hours of tutoring — for a full year of structured mathematics the whole family can use.
And unlike a weekly session, it's there whenever your child is: after school, at weekends, through the holidays.
Subscribe nowWho is it for?
Able, interested children at the end of primary and the start of secondary school — roughly ages 9–14 (Y5–Y8 in England, P6–S2 in Scotland). It's a challenge and boost programme, not a catch-up scheme: it stretches children who find maths easy and makes them excellent.
What exactly do we get?
The complete Simple to Complex Mathematics textbook in the online reader, self-marking quizzes for every chapter with proper maths entry and instant feedback, and new material added through the year — worked-example videos, termly assessments and fresh practice. One login, everything included.
Does one subscription cover siblings?
Yes. It's priced per family, not per child — brothers and sisters share the same membership at no extra cost.
We home educate. Does it fit?
Very well. The programme is a complete, structured spine for this stage of maths — concepts are built simple-to-complex and systematically revisited, and the quizzes mark themselves, so you always know where your child stands without writing your own scheme of work.
How is it different from maths apps?
Apps drill fragments. This is a full curriculum, written as a book by practising teachers and backed by the research on how children actually retain mathematics — then delivered with the feedback and practice tools a book alone can't give. Compare it to tutoring instead: a year costs less than two hours with a tutor.
What if it isn't right for us?
Email us within 14 days of subscribing and we'll refund you in full, no questions. You can cancel any time and keep access until the end of the year you've paid for.
Join as a founding family.
Founding members shape the programme: your child's questions and your feedback steer what gets added next, and families who help us catch errors are credited in the printed edition.
Questions first? info@simpletocomplex.com
Written by teachers. Forty-five years of classrooms.
Kamran Sikander
Author · Head of Mathematics
Twenty years teaching mathematics across Scotland, England and internationally; Head of Maths at an Edinburgh school.
Rama Mulliah
Co-author · Mathematics teacher
Twenty-five years teaching mathematics — co-author of Simple to Complex Mathematics.