Student-centered approaches such as cooperative
learning improve mathematics achievement and
attitudes towards mathematics among students.
Therefore, teachers in schools, especially teachers who
teach mathematics need to be aware of the benefits and
importance of cooperative learning and thus changing
the practice of teacher-centered teaching methods to
student-centered teaching methods. There are positive
changes taking place when teachers change their
teaching methods towards a more student-centered
approach. Teachers need to master the mathematical
content to be delivered and plan how to implement
cooperative learning better. Cooperative learning
should be employed especially STAD so that students
can be help each other in small groups. Therefore,
teachers are encouraged to practice these methods
regularly and effectively. The results showed that
cooperative learning could have a positive effect on the
formation of a more positive attitude towards
mathematics among students. However, attitude is
something very abstract and subjective in detecting
changes in the short term. This study only lasted for
two weeks. This means that students are exposed to
learning in a very short period. Therefore, research
should take a longer time span so that the results of this
study can be validated.