References
Chambers (2025) Chambers 21st Century Dictionary Available at: https://chambers.co.uk/ search/ ?query=average&title=21st [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] (Accessed 02/04/25)
Mason, J. et al. (2005) Developing thinking in algebra. London: Paul Chapman in association with the Open University.
PhET Interactive Simulations Center and Variability Available at: https://phet.colorado.edu/ en/ simulations/ center-and-variability/ about (Accessed 13/12/24).