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n.m. tawil , a. zaharim , i. shaari , n.a. ismail , z.m. nopiah and h. othman.  (2013).  e-learnig as an alternative mode for learning vector calculus for ukm engineering students.  - international journal of soft computing.  8(1):1-7. 

norngainy mohd tawil, nur arzilah ismail, izamarlina asshaari, haliza othman, azami zaharim, hafizah bahaludin.  (2013).  preference learning style in engineering mathematics: students perception of e-learning.  - international education studies.  6(6):61-65. 

zulkifli mohd nopiah, suaidah rosli, mohd nor baharin, haliza othman, arzilah ismail.  (2012).  evaluation of pre-assessment method on improving students performance in complex analysis course.  - asian social science.  134-139. 

n.m. tawil, a. zaharim, i. asshaari, n. a. ismail, m. a. embi.  (2012).  the acceptance of e-learning in engineering mathematics in enhancing engineering education.  - journal of engineering and applied sciences.  7(3):279-284. 

nopiah z.m., jamalluddin m.h., haliza othman n.a.i., asshaari i., osman m.h..  (2012).  reliability analisis of examination questions in a mathematics course using rasch measurement model.  - sains malaysiana.  41(9):1171-1176. 

norngainy mohd. tawil, nur arzilah ismail, izamarlina asshaari, haliza osman, zulkifli mohd nopiah, azami zaharim.  (2012).  learning process in mathematics and statistics courses towards engineering students: e-learning or traditional method?.  - asian social science.  8(16):128-133.