Upaya Meningkatkan Kemampuan Menyelesaikan Masalah Matematika Melalui Guided Discovery Learning Menggunakan Microsoft Teams Berbantuan Excel

Abstract

COVID-19 pandemic in Indonesia has an impact on learning process, which requires students to learn by
network/long distance. One of the platforms that teachers can used is Microsoft Teams. To be able to improve
the ability of students in solving problems in mathematics learning, teachers must make learning situations
with more problems solving, so students can more active in solving problems related to this material. The
learning model that teachers can use is Guided Discovery Learning. Based on the findings in class, one of the
mathematics topics in SMK that are still difficult for students to understand is matrix. This is because matrix
is considered an abstract material and is not related to everyday life. Students bored in studying matrix
because this material consists of many numbers and requires high accuracy. So it takes learning media that
can attract and help students in learning these materials. One of the learning media that can be applied is
Excel Matrix. This research was conducted on 34 students of XI APAT 2 in SMK Negeri 1 Grati. This
research is a classroom action research (PTK) which consists of 3 cycles. The results showed that in cycles 1
and 2 it was still said to be not good, meaning that students were not yet able to understand problems, plan
solutions, carry out solutions, and re-check solutions, while in cycle 3, the ability to solve mathematical
problems of students could be said to be good according to the success criteria. which is determined as many as 23 students from the total (68%) in good or very good criteria in solving problems.