Never Miss a Maths Lesson Again.

The teacher’s off. The lesson isn’t. 21C connects schools, tutors, and learners through a single intelligent platform that delivers curriculum-aligned maths lessons in minutes. We ensure every pupil keeps learning, no matter what.

21C’s diverse AI teaching avatars representing educators and learners
Trusted by schools, parents and learners across the UK and beyond.

The Maths Gap is a National Challenge. We've Built the Solution.

From spiralling supply costs to exam pressure, the challenges in maths education are clear. We believe technology should be part of the answer, offering practical support where it’s needed most.

For Our Schools...
The Cover Crisis

Teacher absence is a systemic issue, costing schools a staggering £1.2 billion on supply staff in 2022/23 alone. This leads to inconsistent lesson quality, learning disruption, and mounting pressure on your staff.

For Our Families…​
The Confidence Crisis​

The pressure of GCSEs is immense. When a pupil falls behind in maths, it can knock their confidence for six, making revision feel like an uphill battle. Finding affordable, expert support that actually works is a real worry for parents.

One Platform. A Solution for Everyone.

Our ecosystem is built on a single, powerful teaching engine. This allows us to provide perfectly tailored support for schools, pupils, and families, all working together to improve maths outcomes.
INSTANT LESSON COVER

21C School

AI-led lesson delivery for schools. On-demand coverage, curriculum-aligned, easy integration.
GCSE & IGCSE REVISION

Pocket Maths

GCSE & IGCSE revision and practice. Diagnostics, adaptive questions, explainer videos. Freemium.
PRIMARY MATHS GAMES

Pocket Games

Boost primary maths fluency with short, gamified modules that build pupil confidence and speed.
TARGETED TUTORING

Pocket Tutor

Live online tutoring for targeted support, powered by 21C content and progress data. Marketplace model.

The Future of Teaching, Powered by Pedagogy and AI.

We’re more than just a content library; we are a teaching operating system. Our platform is built to augment teachers, not replace them, ensuring every lesson is impactful.

Support for Your Teaching Staff

Ensure learning continuity during staff absence with teacher-quality AI avatars. Our platform is a powerful tool designed to support your teaching staff, not replace them.

Exceptional Learning Content

Our platform is driven by pedagogy, not a generic AI wrapper. With 200+ lessons and 5,000+ questions, every element is designed for deep understanding and mastery.

Measurable Impact on Learning & Budgets

Track pupil progress with actionable analytics while replacing £30k-£50k in annual supply spend. We deliver a measurable impact on both learning and your budget.

An Engaging Experience for Every Pupil

What Our Partners & Advisors Are Saying

21C’s impact is best understood through the success stories of the schools, teachers, and students who use our platform.

Improves maths teaching in classrooms.

As a long-standing consultant for State Schools, I endorse 21C's digital learning system. It improves maths teaching and aids students needing extra help. My two-year experience convinces me it'll meet most teacher needs.
John_Milne​
John Milne
Co-founder and MD of Constellation Group, a former Headmaster and Principal

A clear impact on teachers and students.

I commend 21C for its impact. This digital system bolsters maths education both in class and remotely. With two years at 21C, I'm confident it will satisfy the key teaching needs of most modern schools.
Julian Geary
Julian Geary​
Independent Education Advisor to Academies and Local Authority Schools​

Tackles significant educational challenges.

Our collaboration with 21C is built on years of digital maths expertise. Our combined knowledge of learning styles and digital innovation tackles significant educational challenges for teachers and students alike.
Mahboob Mahmood
Mahboob Mohammed​
CEO, Knowledge Platform Singapore​

Ready to Transform Maths Learning?

Get in touch for a live demo to see how 21C can solve your cover crisis, or start exploring our family support tools today.
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