“…Examples of real cases that are very close to the daily lives of students (contextual) will be able to help students understand the concepts being discussed. This is in line with the results of research conducted by (Jarmita, 2013;Efwinda & Sopandi, 2016;Arisanti, Sopandi, & Widodo, 2016;Astuti, 2017) which reveal that low concept mastery is caused by a lack of ability to grasp understanding such as presenting it in a form that is easy to understand and can not apply it in everyday life, causing misconceptions.…”