“…Students are said to understand concepts if students are able to define concepts, identify and give examples or not examples of concepts, develop mathematical connection skills between various ideas, understand how mathematical ideas are related to each other so that a thorough understanding is built, and use mathematics in context outside of mathematics. (Istikomah & Jana, 2018) An alternative selection of an appropriate learning approach can improve the ability to understand concepts (Rahmawati, Lestari, & Umam, 2019), which is applied in everyday life (Saragih, 2018)(Istikomah & Jana, 2018.…”