E-IM3 learning model for developing junior high school students’ decision-making ability in solving number pattern problems

The existence of the new normal and changes in the curriculum have caused teachers to innovate in implementing effective learning so that students are able to solve higher order thinking skills (HOTS) type questions in accordance with the essential skills of the 21st century, namely decision making. One of the innovative learning models that is expected to improve students’ decision-making abilities is the e-IM3 learning model. The e-IM3 learning model is an acronym for electronic (e-) with IM3 steps, namely Identifying (I) problems, Membangun (M) is building ideas, Mengklarifikasi (M) is clarifying ideas, and Menilai (M) is assessing the reasonableness of ideas. This research aims to reveal that e-IM3 learning is able to develop students’ decision-making abilities in solving number sequence problems. This research includes descriptive qualitative research under research subjects 32 grade VIII students at Junior High School in Madiun. Students carry out 4 steps of learning activities, namely identifying problems on student worksheets, building ideas by solving problems, clarifying ideas by presenting answers and assessing the reasonableness of ideas through students’ oral explanations. The research results showed that there were 2 correct student decisions in solving questions on the worksheets, namely: (1) using sequential addition with a fixed difference. (2) using the concept Un = a + (n−1)b, where a is the duration on the first day and b is the difference so that the correct results are obtained. However, in the process there were students who were not careful enough so that the answers were not correct. Other results show that most of the scores obtained by students after implementing E-IM3 learning model increased, which shows that students’ decision-making abilities in solving number sequence problems are developing. This e-IM3 learning model can be used to develop students’ decision-making abilities in other mathematics materials.