Problem solving in mathematics has been a central topic of research in mathematics
education, stemming mainly from Pólya’s (1945) work on problem solving
heuristics (Lesh and Zawojewski, 2007). Despite the attention this topic has
received, the research conducted in problem solving has not easily translated
into improving school practice (Lester and Kehle, 2003). Foster et al. (2014)
found that the teachers’ knowledge and ability to employ “effective strategies
for teaching problem solving processes was particularly underdeveloped” (p.7).
Felmer and Diaz (2016, p.289) also noted that there is little research on “teachers
as problem solvers”, particularly at second level. Evidence on pre-service
secondary teachers’ performance on non-routine problem solving tasks and experience
with solving such problems led Felmer and Diaz (2016) to recommend
that action be taken on pre-service mathematics teacher education courses.
The aim of this research was to develop a framework for teaching and assessing
problem solving in mathematics and to implement this framework in the form
of a teaching intervention with a sample of pre-service secondary level mathematics
teachers. The author developed a Framework for Teaching and Assessing
Problem Solving (F-TAPS) in mathematics, consistent with findings on significant
issues identified from the review of literature. The author’s F-TAPS in
mathematics integrates significant knowledge and affective factors with mathematical
thinking in order to develop proficiency in problem solving in mathematics
through the coherent construction of meaningful knowledge. The author
integrated her F-TAPS in mathematics with the Modified Moore Method using
the Modified 4C-ID model to design and implement an educational intervention
in problem solving. This intervention was implemented with sixteen secondary
pre-service mathematics teachers. Two assessments in problem solving were
developed to assess problem solving ability before and after the intervention.
The mindset (growth/fixed) of the pre-service teachers who participated in this
study was also evaluated before and after the intervention.
Educational Design Research methodology which incorporates a proof of concept
approach underpinned this research. Pre and post-test findings showed
statistically significant increases in the growth mindset and problem solving
ability of the pre-service teachers who participated in this study. The intervention
(and the integrated F-TAPS) had a moderate effect on the mindset of the
pre-service teachers and a strong effect on the problem solving ability of the
pre-service teachers. The proof of concept approach provides evidence that the
author’s F-TAPS could contribute to improved teaching of problem solving in
mathematics at secondary level.