Ketahanan Membran Komposit Khitosan/ Polisulfon Terhadap PH

It has been done the resistance test of chitosan/polysulfon composite membrane toward of solvent. Result showed that composite membrane was resisted to pH of 5.5. It was indicated by the highest swelling percentage, that is 75.48%. These result were supported by porous photo membrane using SEM that is across-section , up surface and bottom photo showed that happed change porous structure membrane but structure tying membrane can not experiencing of damage

Penerapan Srategi Pembelajaran Aktif Tipe the Power of Two Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Koloid Di Kelas XI IPA SMA Negeri 9 Pekanbaru

It has been applied the Power of Two active learning strategy to know the improvement student learning achievement on the subject of Colloid in class XI IPA of Senior High School Number 9 Pekanbaru. The research is a kind of experiment research with pretest-posttest design. The samples of this research were the students of class XI IPA 5 as the experimental class and students of class XI IPA 3 as the control class. Experimental class is a class which was given a treatment by applying active learning strategy type The Power of Two in learning process. The data were analyzed by using t-test. Based on the result of data analysis, it obtained tcount>ttable which is 1.96>1.67. It means that the application of active learning strategy type The Power of Two can improve student learning achievement on the subject of colloid in class XI IPA of Senior High School Number 9 Pekanbaru. The improvement category of student achievement at experiment class was high category with N-gain is 0.78. Meanwhile, the improvement category of student achievement in control class was medium category with N-gain is 0.69

Penerapan Model Pembelajaran Kooperatif Listening Team untuk Mencapai Ketuntasan Belajar Siswa pada Pokok Bahasan Kesetimbangan Kimia di Kelas XI IPA SMA Negeri 12 Pekanbaru

Research has been done to get student's mastery learning with by using model Cooperative Listening Team inclass XI Science SMAN 12 Pekanbaru. This research is pra-experimentre search with one-shot study case design. The sampel use random from the four class XI Science. This research was conducted in class XI Science IPA 4, the for two month's from november to desember 2014. Data analysis technique by using five formula mastery: mastery individual learning objectives (KTPI), mastery each of the learning objectives (KMTP), classical mastery learning objectives (KTPK), mastery learning of individual (KI), mastery learning classical (CBC). Research for the final show that classical mastery learning objectives 80% and mastery learning classical is 91,667%. It's means that the application of cooperative learning model of Listening Team can achieve student's mastery learning on the subject of chemical equiblirium inclass XI IPA SMAN 12 Pekanbaru

Pengembangan Modul Praktikum Kimia Berbasis Problem Based Learning (Pbl) pada Pokok Bahasan Asam Basa untuk Kelas XI Tingkat Sma/ma Sederajat

Research development of chemical- learning media module of practical based Problem Based Learning (PBL) was intended to produce a valid practical module acid base by aspects of content, graphics, presentations, and languange. Other than that for know respons teacher and students to learning media of practical module acid base was developed. Research development of media used ADD models haven 3 steps was Analysis, Design, and Development. Result of research development of acid base practical module based Problem Based Learning (PBL) was valids by 3 validator's people and otherwise valid of aspect contents, languanges, presentations, and graphics with an average percentage of 88.47% (category valid). Response was rated by 18 respondens in SMAN 5 and MAN 1 Pekanbaru and declared percentage respons of 87,48% (category strongly agree). This indicates that the learning media in the form of acid-base experiment module based on Problem Based Learning (PBL) declared valid

Penerapan Model Pembelajaran Kooperatif Rotating Trio Exchange (Rte) untuk Meningkatkan Prestasi Belajar Siswa pada Pokok Bahasan Hidrolisis Garam di Kelas XI IPA SMA N 9 Pekanbaru

The implementation of cooperative learning model Rotating Trio Exchange (RTE) has been conducted to determine the improve in student achievement and improve learning achievement category on the subject of salt hydrolysis in class XI SMA N 9 Pekanbaru. Forms of this research is experimental research design with pretest - posttest. Time data collection between February 8 to April 13, 2016. The sample consisted of two classes, grade XI IPA 3 as the control class and class XI IPA 5 as an experimental class selected at random. Grades given experimental treatment with the application of Rotating Trio Exchange (RTE), while the control class are given learning lecture method. Data analysis technique used is the t-test. Based on the analysis of data processing obtained t¬hitung> ttable is 4.94> 1.67 means that the implementation of cooperative learning model Rotating Trio Exchange (RTE) can improve student achievement on the subject of salt hydrolysis in class XI SMA N 9 Pekanbaru. Category increase student achievement in the classroom experiment with a normalized gain value (N-gain) of 0.91 is included in the high category

Pengembangan Lembar Kegiatan Peserta Didik ( Lkpd ) Berbasis Srtuctured Numbered Heads pada Pokok Bahasan Kelarutan dan Hasil Kali Kelarutan (Ksp)

The student activities sheet based on structured numbered heads for chemistry grade XI senior high school in solubilty and solubility product materials has been developed. Method of this research is Research and Development (R & D). The instruments of this research are questioners which are given to the validators. There are three validators, two of validators is lecturer in chemistry university of Riau and one validator are teachers of SMAN 12 Pekanbaru. The result of this research shows the validity of student participant exercise sheet is 3,56 or 89 %, and category of validity is very high. Based on the result analysis can be concluded that the learning device consist of student activities sheet based on structured numbered heads for chemistry grade XI senior high school in solubilty and solubility product materials has been valid and proper

Studi Komparasi Prestasi Belajar Siswa Menggunakan Model Pembelajaran Kooperatif Tipe Tsts dan Tps pada Pokok Bahasan Struktur Atom dan Sistem Periodik Unsur di Kelas XI IPA SMA Negeri 5 Pekanbaru

Has conducted a comparative study to find out significant differences in student's achievement and to determine student's achievement higher between implementation of cooperative learning models TSTS and TPS on learning topic of Atomic Structure and Elements of the Periodic System at SMAN 5 Pekanbaru. This is an true experimental research with Design Randomized Control Group Pretest-Posttest. The research sample consisted of 2 experimental classes with the implementation of cooperative learning models TSTS and TPS, and 1 control class. Research data analysis using ANOVA one way followed by Scheffe multiple comparison test. Based on the results of data processing by ANOVA one way obtained that Fcount > Ftable is 15,37 > 3,08 which shows that there are significant differences in student achievement between the experimental class TSTS, TPS, and control class. The results of data processing by Scheffe multiple comparison test was obtained the difference between the average experimental class of TSTS and TPS exceeded the values Scheffe is 4,79 > 4,68 and an average experimental class of TSTS higher than average experimental class of TPS is 54,1 > 49,31 which shows that there are significant differences in student's achievement between implementation of cooperative learning models TSTS and TPS. Student's achievement with implementation of cooperative learning models TSTS higher than TPS on learning topic of Atomic Structure and Elements of the Periodic System in class XI IPA SMAN 5 Pekanbaru