Mastering Number

Mastering Number Programme: Reception and Key Stage 1

Recruitment for Mastering Number in 2021/22 has now ended. 

In 2021/22, all Maths Hubs will organise communities of schools following the Mastering Number Programme. This programme will develop solid number sense, including fluency and flexibility with number facts, which will have a lasting impact on future learning for all children. The programme will also involve high quality professional development for teachers.

Each Maths Hub is now accepting applications from schools to join the Work Groups for this programme. This document gives information about the Work Groups and how schools can apply to be involved.

A school’s participation involves teachers from each of Reception, Year 1 and Year 2 (in one-form entry schools), the maths subject lead, and the headteacher. In small schools, there may be just one or two participating class teachers. In larger, multi-form schools, it is expected that lead teachers support colleagues in Reception and KS1 to adopt the same approach in their classes, to ensure consistency across the school.


Since 2014, the NCETM and Maths Hubs have been working together to develop approaches to teaching for mastery within primary maths. Thousands of schools have benefited. The Mastering Number Programme is wholly consistent with teaching for mastery.

For schools in the Mastering Number Programme, children in Reception, Year 1 and Year 2 will have a daily teacher-led session of 10 to 15 minutes, designed to ensure that pupils develop fluency with, and understanding of, number that is crucial to future success in maths and academic progress more generally.

The central programme

The core professional development programme will be delivered by an experienced team from the NCETM, led by the NCETM’s Director of Primary Mathematics, Debbie Morgan. It will involve the lead teachers, maths subject lead and headteacher engaging in a range of synchronous and asynchronous online professional development, including three live sessions, across the academic year.

Teachers will be expected to deliver a daily session of 10 to 15 minutes in addition to their daily maths lesson, which may be a little shorter as a result. Resources, including lesson plans, visual resources and practical equipment, will be provided.

Central to the programme will be a small, abacus-like piece of equipment called a rekenrek, which will be provided for use by children in participating classes. Watch Debbie Morgan demonstrate the rekenrek below.

Local Work Groups

Each Work Group will consist of up to 40 schools and be led by a professional experienced in early maths and in leading professional development in their Maths Hub area. During the year, teachers in the Work Group will work together to share experiences and reflect on the impact of the programme on their pupils and on themselves as teachers. The Work Group Lead will facilitate and steer regular discussion among participants in a dedicated online community. This ongoing cross-fertilisation of experiences, ideas and successes will create a vibrant and sustained professional learning experience for all those taking part. It will also significantly benefit pupils in the participating schools.

Benefits for participating schools

Participating in the Work Group will provide the following benefits to participant schools:
 High quality support for teacher professional development for the lead teachers, directed by the NCETM and facilitated by the local Maths Hub
 Supportive and collaborative online community facilitated by the Work Group Lead
 Resources provided, including coherent plans for the Mastering Number daily sessions in Reception, Year 1 and Year 2
 Sets of the central physical resource: the abacus-like rekenrek
 No charge for participation.