THE DIFFERENCE OF STUDENTS MATHEMATICAL COMMUNICATION ABILITY TAUGHT BY COOPERATIVE LEARNING THINK PAIR SHARE AND NUMBERED HEADS TOGETHER TYPES AT SMP NEGERI 3 KISARAN

This research was conducted at SMP Negeri 3 Kisaran academic year 2014/2015. It intended to know the difference of students` mathematical communication ability taught by cooperative learning Think-Pair-Share and Numbered-Heads-Together types.The population of this research was all students at SMP Negeri 3 Kisaran. The sample was taken from grade VII by simple random sampling technique, classes selected were VII-1 as an experimental class I taught by cooperative learning Think-Pair-Share type and VII-3 as an experimental class II taught by cooperative learning Numbered-Heads-Together type. Each class consists of 32 students as sample of research. Research design of this study was posttest-only comparison group design with the technique of data analysis used is independent sample t-test. Result of this study with α = 0.05 showed that tstatistic > ttable, namely 2.174 > 1.6698. It means that the students` mathematical communication ability taught by cooperative learning Think-Pair-Share type was better than that the students` mathematical communication ability taught by cooperative learning Numbered-Heads-Together type.