1. Calculus;Anton,1992
2. Aspinwall, L., & Shaw, K. (1998, April). Students' use of mental imaging to understand the derivative in calculus. Paper presented at the 76th Annual Meeting of the National Council of Teachers of Mathematics, Washington, DC.
3. Uncontrollable mental imagery: graphical connections between a function and its derivative;Aspinwall;Educational Studies in Mathematics,1997
4. Calculus;Hughes-Hallett,1994
5. Problems of representation in the teaching and learning of mathematics,1987