The rapid development of technology and driven by various human needs, has greatly advanced the manufacturing world, resulting in challenges to produce quality products. It is very important to measure and group the level of surface roughness of steel because the roughness of the surface affects how resistant the product is to wear and how well it performs. It is important to classify the level…
This research aims to describe students' mathematical communication in solving problems through group discussions. The subjects of this research were seventh A grade students of Srijaya Negara Junior High School Palembang. This type of research is descriptive qualitative with data collection techniques used in the form of observation, interviews, and documentation. Data analysis was guided by s…