Peningkatan Kemampuan Pemecahan Masalah Matematis Dan Self Efficacy Siswa Sma…

This research is motivated by the students’ mathematical problem solving ability is still low and even tends to go down. Based on the results of the international study TIMSS (Trends in International Mathematics and Science Study) and the Program for International Student Assessment (PISA) in 2015 showed that in general the ability of Indonesian students is very low in understanding complex i…