The purpose of the study is to identify the classroom mathematical practices developed within a learning environment designed by Realistic Mathematics Education for teaching cone and pyramid to preservice teachers. A teaching experiment including five-week instructional sequence by a hypothetical learning trajectory about the solids of cone and…

This study investigates the quality of argumentation developed by a group of pre-service physics teachers' (PSPT) as an indicator of subject matter knowledge on model rocketry physics. The structure of arguments and scientific credibility model was used as a design framework in the study. The inquiry of model rocketry physics was employed in…

The present study aimed at finding whether L1 Turkish caused interference errors on Turkish EFL learners' spoken English discourse. Whether English proficiency level had any effect on the number of errors learners made was further investigated. The participants were given the chance to choose one of the two alternative topics to speak about. The…