In this article, the author, who has written extensively about mathematical problem solving over the past 40 years, discusses some of his current thinking about the nature of problem-solving and its relation to other forms of mathematical activity. He also suggests several proficiencies teachers should acquire in order for them to be successful in helping students become better problem solvers and presents a framework for research on problem-solving instruction. He closes the article with a list of principles about problem-solving instruction that have emerged since the early 1970s.
Lester, Frank K. Jr.
"Thoughts About Research On Mathematical Problem- Solving Instruction,"
The Mathematics Enthusiast: Vol. 10
, Article 12.
Available at: http://scholarworks.umt.edu/tme/vol10/iss1/12