Butt G, MasterClass in Geography Education: Transforming Teaching and Learning, vol MasterClass series (Bloomsbury Academic 2015)
Hart K, ‘Chapter 7, Ratio and Proportion’, Children’s understanding of mathematics, 11-16 (John Murray 1981) <https://contentstore.cla.co.uk/secure/link?id=8c863559-bf1d-e611-80bd-0cc47a6bddeb>
Jones M, The Handbook of Secondary Geography (Geographical Association 2017)
Lambert D and Jones M, Debates in Geography Education, vol Debates in subject teaching series (Routledge 2013)