Mathematics Mastery is an innovative maths teaching framework, supporting schools, students and teachers to be successful at maths. We are an Ark programme and charity who are committed to transforming maths education in the UK, to ensure that every child has a chance to excel at maths. Our curriculum is evidence-based, using tried and tested approaches from the UK and around the world. Since our launch in 2012, we have grown year-on-year and now work with over 475 partner primary and secondary schools across the UK. As members of the Mathematics Mastery partnership, schools collaborate with each other and are provided with ongoing coaching and mentoring, interactive workshops, and access to our online toolkit of teaching and learning materials. We believe that this can help teachers in the UK to become world leaders in mathematics education.