Students Mathematical Reflective Thinking Skills in Solving Division of Fraction Problem Hendra Lesmana (a,b*), Yaya Sukjaya Kusumah (a),
(a) Department of Mathematics Education, Universitas Pendidikan Indonesia, Jawa Barat, Indonesia
(b) Mathematics Education Study Program, Faculty of Teacher Training and Education, Sriwijaya University, Sumatera Selatan, Indonesia
(*) hendralesmana1302[at]gmail.com or hl1302[at]upi.edu
Abstract
Mathematical reflective thinking skills is one of important skills in 21st century and must be mastered by student. However, need to know how develop it properly. This research is a development study with design research type which aims to design a set of questionares that meet valid, practical, and effective criteria in developing learning in division of fractions in grade V elementary school. The research used the formative evaluation flow proposed by Tessmer which consisted of one-to-one evaluation and expert review stages, small-group evaluation, and field test. Data was collected by asked students comments, and suggestions and results of expert review. In the one-to-one evaluation stage, many questionaires need to be revised because the questions are ambiguous according to students^ opinions. At the same time, the expert said that questionaires were has not ambiguous. So, need to revice the questionaires. At the small-group evaluation stage, students did not have a problem and there were no negative comments about the questionares given. Practicality score was in 0,86, so it included in the very practical category. At the field test stage, the distribution of students was obtained according to student^s learning profiles. Based on pretest and posttest, there is an increase in student^s mathematical reflective thinking skills by n-gain 0,89 which is included in the high category. It was concluded that the question can be said to be valid, practical and effective for being used to enhance the student^s mathematical reflective thinking skills in division of fraction. The researchers hope that this result can be used for other similar studies related to mathematical reflective skills.
Keywords: Mathematical reflective thinking skills, division of fraction, fractional division, high-order thinking skills problem
