“EFFECTIVENESS OF APPLYING COOPERATIVE LEARNING MODEL OF COMBINATION TYPE THINK PAIR SHARE (TPS) AND TWO STAY-TWO STRAY (TSTS) WITH CONTEXTUAL APPROACH IN MATHEMATICS LEARNING IN GRADE AT SMPN 3 LANGGUDU IN BIMA DISTRICT”, JISIP, vol. 4, no. 2, Mar. 2020, doi: 10.58258/jisip.v4i2.1085.