Development of Socrates-Based Linear Algebra Book to Improve Critical Thinking
Ira Vahlia (a*), Dwi Rahmawati (a), Mustika (a), Tina Yunarti (b), Nurhanurawati

a) Mathematics Education Program, Universitas Muhammadiyah Metro
Jalan Ki Hajar Dewantara, Lampung 34111, Indonesia
*iravahlia56[at]gmail.com
b) Mathematics Education Program, Lampung 34111, Universitas Lampung

Abstract

Mathematics lecturers, especially in the Linear Algebra course, do not have structured teaching materials yet. Based on the results of interview and the analysis of critical thinking test, shows that students find difficult to solve given problems such as interpreting problems, analyzing, evaluating, and drawing conclusions. The purpose of this research is to develop teaching materials that can be used, namely the Socrates-Based Linear Algebra book to improve valid and practical critical thinking. In this Socratic method, there is a section for asking questions that stimulate students to think critically. The type of research used is research and development. The subjects of this study is 4th-semester students at the University of Muhammadiyah Metro. The development model used is the Plomp model which consists of three stages, namely (1) Preliminary research, Prototyping, and Assessment. The result shows that the data from the validation of the product material with the total score of the three valuators was 186 with an average percentage of validity of 82.67%, namely the very valid category. The practicality of textbooks is 85.8% with a very feasible category based on the average of questionnaire results from 10 student respondents. Based on the data obtained, it can be concluded that if the product developed is very valid and practical to be used by Linear Algebra Lecturers, then it can be continued to the field test stage.

Keywords: Development- Socrates- Critical Thinking

Topic: Mathematics Education