| Summary: | This study investigated the effect of the Realistic Mathematics
Education (RME) approach on fourth-grade students’ achievement and
problem posing and problem-solving skills based on four basic operations.
“Academic Achievement Test towards Four Basic Operations” was
administered to a total of 70 students. Case study model was used in the
qualitative part of the research designed with a mixed model, and the
obtained data were analyzed by content analysis. The quantitative part of
the study was carried out using a quasi-experimental pretest-posttest design
with the control group. After the 17-week experimental process, a
significant difference was found in experimental group students’ academic
achievements and problem posing and problem-solving skills using four
basic operations. Students who received instruction based on the RME
approach comprehended the problem statements better, created more
meaningful problems and developed their ability to select the appropriate
data and the operation. Extending the classroom use of the RME approach
will effectively improve students' problem posing and solving skills and
increase student achievement in international exams.
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