Maths CAS ideas
67 CAS ideas for students who love maths
Each idea shows which strand it fits, how to run it, what evidence to keep, questions to reflect on and the safety and ethics to think about. Project-ready ideas can grow into a CAS project when you plan them with others and keep them going.
Maths clubs and competitions
- Start a lower-school maths clubServiceCreativityProject-ready
- Run a competition training groupServiceProject-ready
- Organise an inter-house maths competitionCreativityServiceProject-ready
- Plan a school maths week or Pi DayCreativityServiceProject-ready
- Start a maths ideas society for DP studentsCreativity
- Run a maths circle with a local primary schoolServiceCreativityProject-ready
- Mentoring scheme to encourage under-represented groups in mathsServiceProject-ready
- Edit a student maths magazineCreativityProject-ready
- Host a family maths eveningServiceCreativityProject-ready
Peer tutoring and teaching
- Set up a peer-tutoring programmeServiceProject-ready
- Run a maths homework help drop-inService
- Volunteer with an adult numeracy groupServiceProject-ready
- Make maths explainer videos for younger studentsCreativityServiceProject-ready
- Maths support for students new to the language of instructionServiceProject-ready
- Run exam-technique workshops for younger yearsService
- Build a maths games lending libraryServiceProject-ready
- Online maths tutoring with a partner schoolServiceProject-ready
- Kitchen maths with a community groupService
Data projects for charities
- Analyse demand for a food bankServiceProject-ready
- Build a fundraising tracker for a charityCreativityServiceProject-ready
- Adoption statistics for an animal shelterServiceProject-ready
- Design a fair survey for a community organisationServiceProject-ready
- Optimise a volunteer rotaCreativityServiceProject-ready
- Water or air quality data for an environmental groupServiceProject-ready
- Pricing and stock analysis for a charity shopService
- Make a charity's annual figures accessibleCreativityService
Community statistics
- Traffic count for road safety outside schoolServiceProject-ready
- Measure and reduce canteen food wasteServiceProject-ready
- Track the cost of a healthy weekly shopService
- Help the school library understand its usersService
- Accessibility audit of school routesServiceProject-ready
- How reliable is the local bus?Service
- Energy use in school: measure, change, measureServiceProject-ready
- Records and planning for a community gardenActivityServiceProject-ready
Maths art and making
- Design and paint a tessellation muralCreativityServiceProject-ready
- String art: curves from straight linesCreativity
- Origami geometry workshopsCreativityServiceProject-ready
- Compose music from mathematical patternsCreativity
- Curate a maths art exhibitionCreativityServiceProject-ready
- 3D-printed models for the maths departmentCreativityServiceProject-ready
- Photography project on pattern and proportionCreativity
- Design a geometric quilt or textileCreativityServiceProject-ready
Puzzles, games and puzzle hunts
- Build a maths escape roomCreativityServiceProject-ready
- Run a school-wide puzzle huntCreativityServiceProject-ready
- Design a maths board game for a primary schoolCreativityServiceProject-ready
- Keep a weekly puzzle noticeboardCreativity
- Run a probability games stall at a fairCreativityService
- Write a logic puzzle book for charityCreativityServiceProject-ready
- Create a maths trail for a local parkCreativityServiceProject-ready
- Run a game-theory tournamentCreativity
- Strategy game afternoons for a community centreServiceProject-ready
Coding and technology
- Build a practice app for younger studentsCreativityServiceProject-ready
- Simulate the canteen queueCreativityServiceProject-ready
- Make maths more accessible with codeCreativityServiceProject-ready
- A clash checker for clubs and activitiesCreativityService
- Run a creative coding clubCreativityServiceProject-ready
- A data visualisation page for a charityCreativityServiceProject-ready
- Build a weather station with a microcontrollerCreativityServiceProject-ready
- Animate maths ideas for social mediaCreativity
Active maths: sport and the outdoors
- Start a running club that tracks paceActivityProject-ready
- Learn orienteeringActivity
- Plan and lead a sponsored walkActivityServiceProject-ready
- Train for a cycling challenge with dataActivity
- Take up climbing and track your progressActivity
- Choreograph a dance using symmetry and patternsActivityCreativityProject-ready
- Play for a team and run its statisticsActivityService
- Hide and design geocaches with puzzlesActivityCreativity
No ideas match those filters. Try fewer.
How to choose
- Start from a real need or a real interest, not from a list of hours.
- Check which strand it fits; activity means genuine physical exertion.
- Find others to do it with, and someone at school to supervise.
- Check the safety and ethics notes before you commit.
- Agree it with your CAS coordinator.
Then plan it with the CAS stages and keep evidence as you go (evidence and reflection).