PENGARUH PENERAPAN MEDIA E-LEARNING BERBASIS WEBLOG DENGAN MODEL PEMBELAJARAN KOOPERATIF TIPE NHT(NUMBERED HEAD TOGETHER) TERHADAP PENINGKATAN HASIL BELAJAR SISWA SMA PADA POKOK BAHASAN SISTEM KOLOID

This study purposed to determine the significant influence of e-Learning media implementation based on weblog with cooperative learning model type of NHT (Numbered Head Together) in case of improving the students ability in chemistry subject especially about Colloidal System in XIth grade at SMA 3 Medan, year of 2012/ 2013. The population used in this study were all the students of science class in XIth grade at SMA 3 Medan consisting of seven classes with total of 280 students. The samples are 2 classes with total of 80 students with a random sampling technique to obtain the first experimental class who were teaching the application of e-learning–based on weblog media with cooperative learning model type NHT (Numbered Head Together) and the second experimental class were given the teaching application with learning cooperative model type NHT (Numbered Head Together) without e-learning–based on weblog. Based on the pre-test and post-test that have been done in this study, the increasing percentage of learning outcomes for the first experimental class is 75.300% and in the second experimental class is 66.800%. Based on the analysis of hypothesis testing improvement (gain) of student learning outcomes obtained by calculation, the price of t(statistics) = 4.627 were consulted on Wastelands: t >- t ½ α and t > t ½ α ; t >- t (0.025) (78) and t> t (0.025) (78) ; t > - 1.994 and t > 1.994 so the alternative hypothesis (Ha) is accepted and Ho is rejected which means there was a significant effect of the e-learning media implementation based on weblog with cooperative learning model type of NHT (Numbered Head Together) to increase the learning ability of high school students in the subject Colloids System in XIth grade at SMA 3 Medan year of 2012/ 2013.