Work place: Department of Mathematics, Universitas Negeri Padang, Padang, Indonesia

E-mail: yerizon@fmipa.unp.ac.id

Website:

Research Interests: Mathematics, Mathematics of Computing

Biography

Yerizon is a professor of mathematics education in mathematics department, Universitas Negeri Padang, West Sumatera, Indonesia. He is currently as the head of postgraduate program of mathematics education. His major area of interest and expertise are teaching and learning mathematics, implementation and management of technologies in teaching and learning mathematics, assessment in mathematics in school mathematics, distance learning and training and technology in Indonesian contexts.

By Yerizon Triwani Edwin Musdi

DOI: https://doi.org/10.5815/ijeme.2022.03.05, Pub. Date: 8 Jun. 2022

Involving students actively in the learning process is one of the ways that can be used in developing the learning objectives of mathematics which is to improve students' critical thinking skills. Students can be called have mathematical critical thinking skills if they have a way of thinking systematically, have an awareness in thinking, and have the ability to distinguish a truth from truth, and can provide arguments from a problem. In fact, students do not have the knowledge independently before the learning process begins so the students only expect new information at school. The lack of learning resources that are easy for students to understand makes learning still go in one direction and create passive learners. The impact is made students having difficulty in solving problems with varying level of difficulty due to insufficient time to finish it at school. These unsolved questions become independent tasks at home, and students become more difficult to solve it and caused students have not developed the ability to think critically mathematically yet. The purpose of this study is to create a product in the form of an effective learning video to improve students' critical thinking skills. The development model used is Model Plomp which consists of three phases, namely the initial investigation phase, the prototype development phase, and the assessment phase. The subjects of this study were class XI students and a mathematics teacher. Based on the results of observations during the learning process, students look active in discussions and can solve problems that are given systematically. The results of the final test of students 'critical thinking skills, the students' mathematical critical thinking skills increased to 87.87%. It shows that students have good mathematical critical thinking skills after using flipped classroom-based mathematics learning tools. So, it can be concluded that the flipped classroom-based learning device is effective to improve students' mathematical critical thinking skills.

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