electronic education EQUATION ijirk web student mohd learning iejme mathematic approach efficacy self jurnal INDEX MATERIALS OFF sahat docplayer 2014 say jupri mafiadoc siska thamby jen TEACHING fan COUNT MATCHES chen khatimah org garuda PBL SIMILARITY WORD physic material ID SOURCES OF pargaulan science ability improve com oriented creative metacognition peranginangin herman procedia subahan university nian culture siagian bornok shing behavioral based computer REPORT susanto internet serie scientific international widodo meerah conference EXCLUDE enhancing QUOTES effect karo meryance context tambychik word sinaga BIBLIOGRAPHY 2019 development IMPROVE grade sugiman ristekdikti TIME they iainambon ON model sri ijsrp thinking skill mathematical fifth DEVELOPMENT net apulina kuo roheni problem journal 14PM ORIGINALITY SOLVING TO 2010 www hwang 3352 2017 noto PAPER PRIMARY SUBMITTED infinity adi performance issuu through gwo crossref cepsj ray difficultie solving social AUG PROBLEM tarzimah 49327342 saragih ALGEBRAIC