Abstract
The existence of teaching materials has an important role in the learning process. One way to improve the quality of learning is by providing teaching materials (LKM) based on needs. Teaching materials used in this study are the student worksheets based on problems in mathematics statistics courses. The purpose of this study is to develop, test and determine the effectiveness of problem-based teaching materials (LKM). This study applies qualitative and quantitative descriptive data analysis and percentage techniques. The result of this study obtained: Problem-based teaching materials (LKM) that use critical thinking skills indicators; the feasibility of problem-based teaching materials (LKM) according to the lecturers or friends, with an average of 88.69% (good), while according to the students it obtained an average of 81.26% (good). Teaching Materials (LKM) for Mathematical Statistics based on effective problems improve critical thinking skills with a gain of 14.17 and N-gain 0.38 in the medium category.
Highlights
Teaching experience is changing faster and faster, it can be seen in the curriculum of Higher Education SN
Learning no longer centers on lecturers or instructors. At this time the learning carried out in the Mathematics Education study program has applied student-centered learning, in which the students have been involved in finding out information related to the subjects, especially by presenting the tasks given by the lecturer
Lecturing on mathematics statistics at the mathematics education program FKIP UMSU has applied LKM by using the Dick and Carey Design model, but these it is still not empowering students' critical thinking skills because they only do activities according to the instructions without giving students the opportunity to find their own concepts in lecturing or in solving the given
Summary
Teaching experience is changing faster and faster, it can be seen in the curriculum of Higher Education SN. To improve the ability to think critically in mathematics education students, alternative problem solving is chosen by developing a teaching material. Lecturing on mathematics statistics at the mathematics education program FKIP UMSU has applied LKM by using the Dick and Carey Design model, but these it is still not empowering students' critical thinking skills because they only do activities according to the instructions without giving students the opportunity to find their own concepts in lecturing or in solving the given. Through lecturing on mathematics statistics, the students are expected to be able to think critically to find solutions to real life problems. (Arends, L.R. 2008) it states that PBL helps students develop their skills of thinking and problem solving, learn the roles of adult and become independent students From this statement it can be concluded that learning something the learning material is always demanded activities that function to solve the problem. Critical thinking is enhanced when students encounter arguments and debates in conflict, which can motivate them to solve a problem
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