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…

In this study, we administrated dynamic geometry activities which provide students opportunities to explore and estimate geometric figures to connect measurement estimation with geometry. The aim of the study is to investigate effects of using dynamic geometry activities on eighth graders' achievement levels and estimation performances in…

Designing a group study enables students to develop critical thinking, effective team work; appreciation and respect for other views, techniques and problem-solving methods by promoting active learning environment. The purpose of this quantitative study examined the effects of online collaboration on the pre-service teachers' mathematical problem…

To pose a problem refers to the creative activity for mathematics education. The purpose of the study was to explore the eighth grade students' problem posing ability. Three learning domains such as requiring four operations, fractions and geometry were chosen for this reason. There were two classes which were coded as class A and class B. Class A…

This study aims to reveal the mathematics teachers' views about the 8th grade Mathematics Textbook (MTB) prepared according to the New Primary Education Mathematics Curriculum (NPEMC) which took effect in the 2005-2006 education period for the first time. The study uses a case study method. Convenience sampling was used in order to obtain more…