The Cornerstone Maths project community includes teachers, maths curriculum leaders, head teachers, advisers, consultants and researchers.
Between 2014 and 2020 a community on the UK National Centre for Excellence in the Teaching and Learning of Mathematics website was used to share lesson plans and resources - and to discuss observations and experiences from Cornerstone Maths project classrooms. (This community ended in November 2020 when the NCETM website was redesigned).
We highly recommend the use of online teacher communities to support, develop and share classroom practice.