- Mathematics Education Centre
Published inMathematics Teaching
CitationHEWITT, D.P.L., 2017. What comes after nine? Mathematics Teaching, No.256, pp.21-24.
PublisherAssociation of Teachers of Mathematics
VersionAM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/