Abstract :
This study aims to determine the effect of cooperative learning model type mind
mapping on the ability to understand the mathematical concepts of class VIII
students of SMPN 1 Rambah Hilir. This type of research is quasi experimental
and the population of all eighth grade students of SMPN 1 Rambah Hilir. The
sampling technique used was simple random sampling technique which consisted
of two classes, namely the experimental class and the control class. In the
experimental class applied conventional learning models. Data collection
techniques use descriptive test instruments that have been analyzed for validity,
level of difficulty, differentiation, and reliability. The data obtained were analyzed
by Mann Whitney test with the results of zcount: 3,22 greater than ztable: 1,96 which
indicates that there is the influence of cooperative learning model type mind
mapping on the ability to understand mathematical concepts of class VIII students
of SMPN 1 Rambah Hilir.