London South West Maths Hub

Professional Development

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Mastering Number 



Supporting pupils in Reception, Year 1 and Year 2 to develop good number sense.
This project aims to secure firm foundations in the development of good number sense for all children from Reception through to Year 1 and Year 2. The aim over time is that children will leave KS1 with fluency in calculation and a confidence and flexibility with number. Attention will be given to key knowledge and understanding needed in Reception classes, and progression through KS1 to support success in the future.


Who can take part?
This programme and its Work Groups are open to all schools that have not yet engaged with the Mastering Number programme. 
Lead participants from Work Group schools will be three teachers, one each from Reception, Year 1 and Year 2, who will be called Lead Teachers with some support given to subject leaders and headteachers. There is an expectation that these Lead Teachers support the other teachers in their year group.


What is involved?
The Work Group Lead and Lead Teachers will be supported by both central training, local sessions, and resources. There is an expectation that teachers will provide a daily teaching session for all children of 10 to 15 minutes, this may be the sole direct teaching session in Reception and in addition to their normal maths lesson for Year 1 and Year 2 


Schools chosen to participate in the Work Group commit to the following expectations:

  • The school will introduce Mastering Number in all Reception, Year 1 and Year 2 classes, in addition to their daily maths lesson (which could be shortened as a result of participation in this Work Group or replace the maths session in Reception)
  • Teachers will be expected to contribute regularly to Local Online Work Group activity, led by the Work Group Lead, reflecting on the implementation and impact of the programme
  • Participants in the project will engage in all online synchronous and asynchronous professional development, including three national live online sessions and three local Work Group sessions during the year 
  • The school will provide any feedback required by the Maths Hub and participate in any evaluation processes required
  • The school’s leadership team will ensure attendance at programme events and will support Lead Teachers in their development of the wider staff
How much does it cost?
The Mastering Number programme is fully funded by the Maths Hub pprogramme so is free to state-funded participating schools.
Please note - Whilst digital rekenreks are freely available online, schools taking part in the September start cohort of this programme may wish to consider purchasing class sets of physical rekenreks for Year 1 and Year 2 prior to the start of the programme.


Express an interest
Please contact us if you are interested and would like to apply.