Chemical Education

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Ekstrak Kulit Buah Manggis (Garcinia Mangostana) Sebagai Inhibitor Korosi Baja Lunak Dalam Media Asam Klorida
(2013-01-17) Aryswan, Adhe
INHIBITOR KOROSI BAJA LUNAK DALAM MEDIA ASAM KLORIDA Adhe Aryswan1, R. Usman Rery, Maria Erna Program Studi Pendidikan Kimia Fakultas Keguruan dan Ilmu Pendidikan Universitas Riau ABSTRACT Mangosteen rind extract has been used as an inhibitor of mild steel corrosion in HCl medium. The determination of the corrosion inhibition efficiency was calculated by using weight loss method. The optimum conditions were determined by the variation of corrosive media concentration, the variation of contact time and the variations of extract concentration. The result showed that the efficiency of optimum corrosion inhibition was 59,07%, with the condition of 0.5 M HCl medium concentration, 5-days contact time in the extract concentration of 200 ppm. The inhibition of mangosteen rind extract occurred spontaneously through chemisorption on metal surfaces. It was shown from the Gads of major component in mangosteen rind, namely -mangostin for -47,0526 kJ mol-1
Isolasi Dan Uji Aktivitas Senyawa Aktif Sitotoksik Dari Tumbuhan Akar Tapak Kuda (Bauhinia hullettii Prain)
(2013-07-27) Nurchandari, Aci
This study aimed to isolate the active cytotoxic compound from akar tapak kuda (Bauhinia hullettii Prain) and tested its cytotoxic activity using BSLT method. Sample studied was leaves of akar tapak kuda. Phytochemical screening results showed that sample contains triterpenoid, steroid, flavonoid, phenolic and saponin compounds. As much as 1,4 kg of sample in the form of dry powder was extracted by maceration method using solvent n-hexane, dichloromethane, ethyl acetate and methanol. Extraction resulted 28,6368 g of n-hexane fraction, 39,1009 g of dichloromethane fraction, 21,3175 g of ethyl acetate fraction and 113,9438 g of methanol fraction. Cytotoxic activity test has been conducted to dichloromethane, ethyl acetate and methanol fractions. The results of test showed that LC50 values of n-hexane, dichloromethane and methanol fractions were 123,7758 ppm, 2.729,1905 ppm and 829,7525 ppm, respectively. It means that ethyl acetate fraction was not active cytotoxic, while dichloromethane and methanol fractions were active cytotoxic. Dichloromethane fraction was the most active fraction so that its separation needs to be continued. As much as 30 g of concentrated dichloromethane fraction was separated using chromatography technique, namely vacuum liquid chromatography and gravity column chromatography with various eluent systems. Separation resulted 231 mg white needle-shaped crystal as isolate that contained of two spot based on TLC analysis. Phytochemical test indicates that the isolate was triterpenoid and steroid compounds. The results of cytotoxic activity test showed that LC50 value of the isolate was 605,1815 ppm. It means that isolate was active cytotoxic.
Pemberian Lks Berupa Teka-Teki Silang Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Koloid Di Kelas Xi Ipa Sma Negeri 1 Ujungbatu
(2013-01-07) Salvia, Atika
The purpose of this research was to know if the given of crosswords puzzle students worksheets could increase student activity in the learning of Koloid matery at XI IPA class SMA Negeri 1 Ujungbatu. The research has been done at may 2012. This research is experimental research with pretest-posttest design. The sample of research is XI IPA 2 class as the experimental class and XI IPA 3 class as the control class. Data collection techniques in this research were a t-test. According to the result of data analysis tvalue > ttable (2,70 > 1,67), it means the given crosswords puzzle students worksheets could increase students activity in the learning of Koloid matery in class XI IPA SMA Negeri 1 Ujungbatu.
Pemberian Lks Berupa Teka-Teki Silang Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Koloid Di Kelas Xi Ipa Sma Negeri 1 Ujungbatu
(2013-01-08) Atika Salvia
The purpose of this research was to know if the given of crosswords puzzle students worksheets could increase student activity in the learning of Koloid matery at XI IPA class SMA Negeri 1 Ujungbatu. The research has been done at may 2012. This research is experimental research with pretest-posttest design. The sample of research is XI IPA 2 class as the experimental class and XI IPA 3 class as the control class. Data collection techniques in this research were a t-test. According to the result of data analysis tvalue > ttable (2,70 > 1,67), it means the given crosswords puzzle students worksheets could increase students activity in the learning of Koloid matery in class XI IPA SMA Negeri 1 Ujungbatu.
Pemberian Lks Berupa Teka-Teki Silang Untuk Meningkatkan Restasi Belajar Siswa Pada Pokok Bahasan Struktur Atom Dan Sistem Periodik Unsur Kelas X Sma Negeri 10 Pekanbaru
(2013-01-14) Izzati, Nabilah
PEMBERIAN LKS BERUPA TEKA-TEKI SILANG UNTUK MENINGKATKAN PRESTASI BELAJAR SISWA PADA POKOK BAHASAN STRUKTUR ATOM DAN SISTEM PERIODIK UNSUR KELAS X SMA NEGERI 10 PEKANBARU Nabilah Izzati*), Armiyus Thaib, Herdini Program Studi Pendidikan Kimia Fakultas Keguruan dan Ilmu Pendidikan, Universitas Riau *)E-mail: nabil_za8@yahoo.co.id ABSTRACT Student worksheets are one of the important learning tools and are expected to help students to discover and develop the concept. From observations during the field experience implementing programs in SMA Negeri 10 Pekanbaru in September 2011 until January 2012, it appears that the way of presenting student worksheets seem monotonous and less varied in particular on the subject of Atomic Structure and the Periodic System of Elements the first grade. This causes students are less motivated and less actively involved in the learning activities, resulting in students’ achievement on the subject of Atomic Structure and the Periodic System of Elements is still relatively low. Based on this, done research on giving student worksheets form of crossword puzzles to improve students’ achievement on the subject of Atomic Structure and the Periodic System of elements the first grade. This research is an experimental research with pretest-posttest design. The time of data collection was conducted in July until September 2012. The population in this research is the first year students of SMA Negeri 10 Pekanbaru of the academic year 2012/2013 consisting of nine classes. The research sample consisted of two homogeneous classes, the class X.8 as the experimental class and the class X.4 as the control class. The experiment class was treated giving student worksheets form of crossword puzzles, whereas the control class was given usual learning. The data collection technique is the technique of test. Technique of data analysis used is the t-test. The results of the analysis of hypothesis data showed that t-value is greater than t-table is 2.48 > 1.675, so it can be concluded that giving student worksheets form of crossword puzzles can improve students’ achievement on the subject of Atomic Structure and the Periodic System of Elements the first grade of SMA Negeri 10 Pekanbaru.
Pemberian Materi Prasyarat Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Larutan Penyangga Di Kelas XI SMA Negeri 1 Pekanbaru
(2013-06-24) Siska, Ayu
Research on the provision of material preconditions have been conducted to determine whether provision the material precondition can improve student achievement on the buffer solution subject in class XI SMAN 1 Pekanbaru. The research’s form is an experimental research with pretest-posttest design. The research was conducted on the even semester in academic year 2012/2013. The sample consisted of two classes, class XI Science 2 as the experimental and class XI Science 1 as the control class which randomly selected after tests of normality and homogeneity . Experimental class was treated by giving material precondition, while the control class was not given precondition material. Provision of material precondition was done to establish the precondition knowledge that students are more receptive to further learning. Data collection technique used is the test. Data analysis technique used is the t-test. Based on the results of the final data processing obtained t count > ttable, it is 3,08 > 1,67. This shows that the provision of material preconditions can improve student achievement on the buffer solution subject in class XI SMAN 1 Pekanbaru, the effect of an increase of 13.68%.
Pemberian Materi Prasyarat Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Reaksi Redoks Di Kelas X SMA Negeri 4 Pekanbaru
(2013-06-24) Novriani, Ulfa; Atika
This research purpose to determine whether knowledge preconditions can improve student achievement on the subject of Oxidation Reduction Reaction in class X SMAN 4 Pekanbaru. This research is a form of experimental research with pretest and posttest design. The research was conducted between the 12th of March until 9 April 2013. The sample consisted of two classes, the class as a class experiment is X.5 and X.1 class as the class of a randomized control after homogeneity test. Experimental class was given the knowledge preconditions while the control class without giving the knowledge preconditions. The data analysis technique used in this study was the statistical test using the t test. Performed by t test values obtained tcount> t table , it is 4.53> 1.67. This shows that the knowledge preconditions can improve student achievement on the subject of Oxidation Reduction Reaction in class X SMAN 4 Pekanbaru.
Pembuatan catatan terbimbing (guided note-taking) Untuk meningkatkan prestasi belajar siswa pada pokok bahasan tata nama senyawa di kelas x sman 2 siak hulu
(2013-01-03) Arini
PEMBUATAN CATATAN TERBIMBING (GUIDED NOTE-TAKING) UNTUK MENINGKATKAN PRESTASI BELAJAR SISWA PADA POKOK BAHASAN TATA NAMA SENYAWA DI KELAS X SMAN 2 SIAK HULU Arini, Islamias, Asmadi M.Noer Kampus Bina Widya Km. 12,5 Simpang Baru Pekanbaru 28293 Telp. (0761) 63266 ABSTRACT Based on information from a chemistry teacher at SMAN 2 Siak Hulu is known that there are still many low student learning outcomes, especially on the subject of nomenclature X High School class of compounds. Learning method which has been used teacher-centered lecture method. This affects student achievement, for it carried out the research with guided note-making strategies to improve student achievement in the subject class of compounds nomenclature X SMAN 2 Siak Hulu. Time data collection that is dated November 3 to December 9. The sample in this study is X.8 class as a class experiment and X.6 class as the control class. Data collection techniques in this study is to test techniques. Data gathered from test data taken from the value of homogeneity test chemical bond students on the class of X and hypothesis test data taken from the difference between posttest and pretest values. Data analyzed by t-test is to determine the increase in academic achievement between experimental classes and control classes. From the research, it can be concluded that the strategy-making guided notes to improve student achievement in the subject class of compounds nomenclature X SMAN 2 Siak Hulu that is equal to 9.98%.
Pembuatan Catatan Terbimbing (Guided Note-Taking) Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Hidrokarbon Di Kelas X Sma Muhammadiyah 1 Pekanbaru
(2013-01-17) Ningsih, AD
PEMBUATAN CATATAN TERBIMBING (GUIDED NOTE-TAKING) UNTUK MENINGKATKAN PRESTASI BELAJAR SISWA PADA POKOK BAHASAN HIDROKARBON DI KELAS X SMA MUHAMMADIYAH 1 PEKANBARU Asih Dia Ningsih, Islamias, R Usman Rery Program Studi Pendidikan Kimia Fakultas Keguruan dan Ilmu Pendidikan Universitas Riau Abstract The research about making of Guided Note-taking to increase student’s achievement in especially hydrocarbon topic at SMA Muhammadiyah 1 Pekanbaru had been done in April 2012. The purpose of this research was to know if the making of Guidd Note-taking could increase student achievement in hydrocarbon topic. Subject of this research were students at X4 class was randomly selected as experiment class and X5 class as control class. Research result revealed thas making of Guided Note-taking was capable to improve student’s achievement in chemistry especially in hydrocarbon topic (tarithmetic > ttable ; 2,89 > 1,67).
Penerapan Macromedia Flash Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Ikatan Kimia Di Kelas X Sma Negeri 2 Siak
(2013-02-12) Puspitaloka, Anabella
The research about aplication of learning media Macromedia Flash to increase student’s achievement in chemistry especially chemistry bonding at 10th on SMAN 2 Siak had done in November 2012. The purpose of this research was to know if the application of learning media Macromedia Flash increase student achievement in chemical bonding. Subject of this research were students at X.5 and X.6 in academic year 2012/2013 that had tested its normality and homogeneity. X.5 as experiment class and X.6 as control class was randomly selected. Macromedia flash applied in X.5 class. Research results revealed that application Macromedia Flash was capable to improve student’s achievement in chemistry especially in chemical bonding (tcount > ttable; 4,84>1,67). The improvement of student’s achievement in experiment class was supported by N-Gain score 0,61 that included in medium category. Thus, it can be concluded that Macromedia Flash in chemical bonding effective to increase student’s achievement on SMAN 2 Siak.
Penerapan Media Animasi Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Laju Reaksi Kelas XI IPA SMA Negeri 12 Pekanbaru
(2013-06-10) Patiwi, Rizki
The research conducted by using the application of animation media that was done to know the increasing of students’achievement in reaction rate subject at class XI Science SMAN 12 Pekanbaru. The type of this research is experiment design with pretest-posttest control group. The time allocation in taking data was on November 2012. The sample consisted of two classes, that is XI Science 2 as the experiment class and XI Science 1 as the control class. The application of animation media and cooperative learning type STAD was given to the experiment class while the control class was given the application of cooperative learning type STAD only. Data analysis technique used is the t -test. The research results showed that t hit > ttab that is 11,151 > 1,67 and coefficient of this influence (Kp) as big as 64,31%. Hypothesis stated that “the application of animation media could increase the students’achievement of study in reaction rate subject in class XI Science SMAN 12 Pekanbaru” is accepted. From the research could be concluded that the application of animation media could increase the students’achievement of study in reaction rate subject in class XI Science SMAN 12 Pekanbaru
Penerapan Media Microsoft Power Point Ispring Pro Untuk Meningkatkan Prestasi Belajar Kimia Siswa Kelas X SMK Negeri 2 Pekanbaru Pada Materi Ikatan Kimia
(2013-07-27) Mulyanti, Hilda
This research discussing about the use of media Microsoft Power Point iSpring Pro on the subjects of a chemical bond in SMKN 2 Pekanbaru to improve performance students achievement. The use of appropriate media in the process of learning is required so that student feel interested and motivated to learn. The research’s form is an experimental research with pretest-posttest design. The research was conducted on the even semester in academic year 2012/2013. The sample consisted of two classes, Majoring Images class as the experimental class and Majoring Sofware Engineering class (RPL) as the control class which randomly selected after homogeneity tests. The results of prerequisite test used to homogeneity test and chemical bonding test results used to hypothesis test. Data collection technique used is the test. Data analysis technique used is the t-test. Based on the results of the final data processing obtained t count > ttable, it is 3,63 > 1,67. This shows that the use of Microsoft Power Point iSpring Pro as a media of learning can improve student achievement on the chemical bond subject in class X SMKN 2 Pekanbaru, the effect of an increase of 20,21%
Penerapan Metode Pembelajaran Aktif Cooperative Script Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Koloid Di Kelas XI MA Anshor Al Sunnah Air Tiris
(2013-07-27) Fitriani, Siti
Research on the application of active learning Cooperative Script method has been done in class XI of MA Anshor Al Sunnah Air Tiris on the subject of colloids in 2013. Based on the results of observations conducted by researchers at the MA Anshor Al Sunnah Air Tiris do known that learning is teacher centered, so that students become less active and negatively affect student achievement. The objective was to determine the increase in student achievement and increase student achievement category. The research form is an experimental research with pretest-posttest design. The sample consisted of two classes, namely class XI B1 as the experimental group and the class XI B2 as the control group. The experimental group is the group of students who were treated by applying the active learning of Cooperative Script method, while the control group was treated with information discussion methods. Data analysis technique used is the t-test. The results showed t arithmetic>ttable (1,975 > 1,69726) and N-gain of the experimental group is 0,757 which includes the high category. Therefore, it can be concluded that the application for active learning Cooperative Script method can increase student achievement in the subject of colloids in MA Anshor Al Sunnah Air Tiris
Penerapan Metode Pembelajaran Talking Stick Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Koloid Di Kelas XI IPA SMA Negeri 7 Pekanbaru
(2013-07-19) Masykur, Rahmadani
Research on the application of learning methods Talking Stick has been done to improve student achievement on the subject of colloid in class XI Science SMAN 7 Pekanbaru. Research is a form of experimental research with pretest-posttest design. The study was conducted in the second semester 2013. The sample consisted of two classes, namely class XI IPA2 as the experimental class and the class XI IPA1 as a class controls randomly selected after tests of normality and homogeneity tests. Data analysis technique used is the t-test. Based on the results of the data analysis using t-test formula obtained t> t table ie 4.0529> 1.997 means that the application of learning methods Talking Stick can improve student achievement on the subject of colloids in class XI Science SMAN 7 Pekanbaru, the effect of an increase of 20.17 %.
Penerapan Metode Tutor Sebaya Untuk Meningkatkanprestasi Belajar Kimia Siswa Pada Pokok Bahasan Reaksi Oksidasi Dan Reduksi Di Kelas X SMAN 1 Ukui
(2013-06-26) Mulyanti, Asrinda
The purpose of this research is to know the increase of chemistry learning achievement at the oxidation reaction and reduction reaction topic which was conducted at SMA Negeri 1 Ukui in 2010/2011. This method of research is pre-experiment with pretest-posttest design. The data collection technique used is test technique and the data processing used is statistics t test. From the hypothesis test processing can get count t value > ttable (2,219> 1,67). Thus, we can conclude that application of peer tutoring methods at the oxidation reaction and reduction reaction is be able to increase achievement chemistry learning by students of X grade SMAN 1 Ukui to increase student achievement by 8,4%.
Penerapan Model Learning Cycle 6e Untuk Meningkatkan Hasil Belajar Siswa Pada Pokok Bahasan Hidrokarbon Di Kelas X SMA Negeri 3 Pekanbaru
(2013-01-03) Astiraji, I
PENERAPAN MODEL LEARNING CYCLE 6E UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA POKOK BAHASAN HIDROKARBON DI KELAS X SMA NEGERI 3 PEKANBARU Ilse Astiraji, Betty Holiwarni, dan Jimmi Copriady Program Studi Pendidikan Kimia FKIP Universitas Riau Email : ilse_astiraji@yahoo.co.id Abstract This research was aimed at knowing the influence of using the Learning Cycle 6E model on the students’ learning results in hydrocarbon. The first graders of SMA Negeri 3 Pekanbaru which were at the end of the second semester of 2011/2012 were the subjects of the research. In this case, there were two classes selected randomly to be experimental and control groups. To collect the data, lesson plan and tests were employed as research instrument. The influence of using the Learning Cycle 6E model on the students’ learning results was analyzed by comparing the difference of pretest-posttest of the experimental and control groups. Based on the T-test one point of view, it was acquired that t-value > t-table (1,793 > 1,671). Therefore, it can be concluded that the application of the Learning Cycle 6E model can increase students’ learning results in hydrocarbon at first grade of SMA Negeri 3 Pekanbaru with an influence of 5.43%.
Penerapan Model Learning Cycle 6e Untuk Meningkatkan Hasil Belajar Siswa Pada Pokok Bahasan Sistem Koloid Di Kelas XI SMA Negeri 3 Pekanbaru
(2013-01-03) Utami, W.F
PENERAPAN MODEL LEARNING CYCLE 6E UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA POKOK BAHASAN SISTEM KOLOID DI KELAS XI SMA NEGERI 3 PEKANBARU Wira Fadhila Utami, Jimmi Copriady, dan Rini Program Studi Pendidikan Kimia FKIP Universitas Riau Email : wirafadhila@yahoo.co.id Abstract : Learning model is one of ways used to achieve learning results. One of learning models that can be used to improve learning results is Learning Cycle 6E. The purpose of this research was knowing increasing of students’ learning results at class XI Science SMAN 3 Pekanbaru on colloid system. In this case, there were two classes selected randomly to be experimental and control groups. To collect data, the syllabus, the lesson plans, reading material, student worksheets, problem elaboration and evaluation questions are used as research instruments. The influence of using the Learning Cycle 6E model on the students’ learning results was analyzed by comparing the difference of posttest-pretest of the experimental and control groups after the whole materials were already taught. Based on the T-test one point of view, it was found that tvalue > ttable (2,5416 > 1,671). Therefor, it can be concluded that the application of the learning cycle 6E model can increase student’s achievement on the subject of colloid system in class XI SMAN 3 Pekanbaru with an influence of 9,168%.
Penerapan Model Pembelajaran Aptitude Treatment Interaction (Ati) Untuk Meningkatkan Hasil Belajar Siswa Pada Pokok Bahasan Koloid Di Kelas XI SMAN 5 Pekanbaru
(2013-05-11) Sulaika, Hemalia
PENERAPAN MODEL PEMBELAJARAN APTITUDE TREATMENT INTERACTION (ATI) UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA POKOK BAHASAN KOLOID DI KELAS XI SMAN 5 PEKANBARU Hemalia Sulaika, Erviyenni, dan Johni Azmi Program Studi Pendidikan Kimia FKIP Universitas Riau Email: Hemaliasulaika@ymail.com Abstract A research on the application of learning models Aptitude Treatment Interaction (ATI) has been carried out with the aim to improve the learning outcomes of students about colloid subject in class XI SMAN 5 Pekanbaru. The learning model of Aptitude Treatment Interaction (ATI) is a learning model that adjust the characteristics of learning to the students' abilities. Students were divided into three groups based on their ability (high, medium, and low). Then they are given a different treatment to each group according to their ability. This research is experimental research with pretest-posttest design. The sample consisted of two homogeneous classes, class XI IPA-6 as an experimental class and class XI IPA-5 as the control class. Experimental class was treated by the application of learning models Aptitude Treatment Interaction (ATI), while the control class is not treated. The data analysis technique used is the t-test. From the results of data processing t observed is greater than t-table that is 2.37 greater than 1.6. So it can be concluded that the application of learning models Aptitude Treatment Interaction (ATI) can improve student learning outcomes on the colloid subject in class XI SMAN 5 Pekanbaru.
Penerapan Model Pembelajaran Aptitude Treatment Interaction (Ati) Untuk Meningkatkan Hasil Belajar Siswapada Pokok Bahasan Reaksi Redoks Di Kelas X SMAN 5 Pekanbaru
(2013-01-03) Siyampriyanti, R
PENERAPAN MODEL PEMBELAJARAN APTITUDE TREATMENT INTERACTION (ATI) UNTUK MENINGKATKAN HASIL BELAJAR SISWAPADA POKOK BAHASAN REAKSI REDOKS DI KELAS X SMAN 5 PEKANBARU Ria Siyampriyati, Johni Azmi, dan Jimmi Copriady Program Studi Pendidikan Kimia FKIP Universitas Riau Email: ry_1891@yahoo.com Abstract A research on the application of the learning model type Aptitude Treatment Interaction (ATI) has been conducted. This research aimed to increase students’ achievement in learning oxidation-reduction reaction (redox) at grade X class of SMAN 5 Pekanbaru. The students were divided into three groups with different ability (high, moderate, and low). This research was used pretest-posttest control group design. Hypothesis was measured by n-gain and t-test. From the result ngain experiment class is bigger than n-gain control class (0,89 > 0,71; 0,72 > 0,53; and 0,57 > 0,55) and t observed was 1,90 meanwhile t table was 1,67. It indicated that t observed > than t table. It means the Ho was rejected and H1 was accepted. Therefore, it could be concluded that the application of the learning model type ATI was able to increase students’ learning achievement in redox reaction at X class of SMAN 5 Pekanbaru.
Penerapan Model Pembelajaran Kooperatif Course Review Horay Untuk Meningkatkan Hasil Belajar Siswa Pada Pokok Bahasan Kelarutan Dan Hasil Kali Kelarutan Di Kelas Xi Sma Negeri 5 Pekanbaru
(2013-01-15) Yuanita, Refi
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF COURSE REVIEW HORAY UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA POKOK BAHASAN KELARUTAN DAN HASIL KALI KELARUTAN DI KELAS XI SMA NEGERI 5 PEKANBARU Refi Yuanita*, Sri Haryati, Rini Program Studi Pendidikan Kimia Fakultas Keguruan dan Ilmu Pendidikan, Universitas Riau, Pekanbaru *refiyuanita@yahoo.co.id ABSTRACT Research to improve student learning outcomes on the subject of solubility and solubility product in class XI SMA Negeri 5 Pekanbaru had done through the implementation of cooperative learning model Course Review Horray (CRH). The sample in this study was a class XI IPA 5 as the experimental class and XI IPA 1 as the control classes. Data collection techniques in this study is the technique of the test, the data obtained from the difference of pretest-posttest value as the test data hypothesis. Data were analyzed by t-test calculations which used to determine the improvement of student learning outcomes and gain normalized (N-gain) to determine the category of improving student learning outcomes. The value of the average normalized gain student learning outcomes experimental class and control class respectively, are 0.735 and 0.625 were categorized as high and medium. The analysis showed that the application of cooperative learning model CRH can improve student learning outcomes with the real level of 5% price obtained tcount > ttable is 3.321> 1.67.

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