This is the professional learning resource of the OER4Schools project at the Centre for Commonwealth Education. For more information about this project, visit the OER4Schools project page. To learn more about the aims and content of the resource, see Overview. If you are planning to use this resource, then do contact us to see whether we can collaborate in some way. The resource was collaboratively authored, primarily by Sara Hennessy, Bjoern Hassler, Nitu Duggal, Wei Shin Leong, and Janet Blair of the University of Cambridge Faculty of Education, and Abel Makonga and Agness Tembo of Chalimbana Basic School (Chalimbana, Zambia)