The aim of the paper is to discuss some aspects of the combinatorial thinking of high school students. We took one student - Jane and gave her 4 isomorphic testing problems. Then we tried to classify the different strategies the students took in their solutions.
Janácková, Martina and Janácek, Jaroslav
"A classification of strategies employed by high school students in isomorphic combinatorial problems,"
The Mathematics Enthusiast: Vol. 3
, Article 2.
Available at: http://scholarworks.umt.edu/tme/vol3/iss2/2