Tall, David ; Lima, Rosana Nogueira de ; Healy, Lulu Tall , D , Lima , R N D & Healy , L 2014 , ' Evolving a three-world framework for solving algebraic equations in the light of what a student has met before ' , Journal of Mathematical Behavior , vol. 34 , pp. 1-13 . https://doi.org/10.1016/j.jmathb.2013.12.003.
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2014
Tall, David ; Lima, Rosana Nogueira de ; Healy, Lulu Tall , D , Lima , R N D & Healy , L 2014 , ' Evolving a three-world framework for solving algebraic equations in the light of what a student has met before ' , Journal of Mathematical Behavior , vol. 34 , pp. 1-13 . https://doi.org/10.1016/j.jmathb.2013.12.003.
,
2014