Hermansyah Amir, Hermansyah
Faculty of Education, University of Bengkulu Bengkulu, Jl. W.R. Supratman, Kandang Limun, Bengkulu 38371A, Indonesia

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PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN PEMBELAJARAN KOOPERATIF TIPE TEAM GAMES TOURNAMENT (TGT) DENGAN MEDIA ULAR TANGGA DAN MEDIA PUZZLE DI KELAS XI SMA NEGERI 01 BENGKULU TENGAH Syafitri, Aisha; Amir, Hermansyah; Elvinawati, Elvinawati
Alotrop Vol 3, No 2 (2019)
Publisher : FKIP University of Bengkulu

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This study aims to determine the comparison of student learning outcomes using cooperative learning type Teams Games Tournament (TGT) with media snake ladder and media puzzle in class XI SMA Negeri 01 Bengkulu Tengah Year 2017/2018 on the subject of colloidal system. This research is a quasi experimental research with the population of all students of class XI SMA Negeri 01 Bengkulu Tengah and the sample is XI MIPA 3 experiment I applying Snake Ladder media and XI MIPA 4 as experiment class II which apply puzzle media. Student learning outcomes in this study is seen from the difference between pretest and posttest values. In the experimental class I which uses snake ladder media, the average value of the increase in students' cognitive learning outcomes is 43.30. Whereas in the experimental class II that uses media puzzle, the average value of the increase in students' cognitive learning outcomes is 35.97. From a series of statistical tests conducted hypothesis testing using t-test with a significant level of 0.01 obtained tHitung> tTable (2.42> 2.39). The results showed that there was a significant difference between the learning outcomes of students who were taught by cooperative learning using Snake Media Appliance and Puzzle media. The result of this research can be concluded that  in general the result of student learning by applying cooperative learning model of Team Games Tournament (TGT) type with snake ladder media is higher than with puzzle media on colloidal system subject.
HUBUNGAN PERSEPSI SISWA KELAS X MIPA DI SMA NEGERI SEKOTA BENGKULU TAHUN AJARAN 2016/2017 TENTANG VARIASI GAYA MENGAJAR GURU DENGAN HASIL BELAJAR KIMIA Lestari, Indah Ayu; Amir, Hermansyah; Rohiat, Salastri
Alotrop Vol 1, No 2 (2017)
Publisher : FKIP University of Bengkulu

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[RELATIONS  OF STUDENTS PERCEPTION AND  VARIATION TEACHING STYLE   WITH  CHEMISTRY LEARNING  OUTCOMES  AT CLASS X MIPA IN SMA NEGERI KOTA BENGKULU  IN 2016/2017 ACADEMICS YEAR ] In teaching and learning activities at school, often faced with the problem of low student learning outcomes. Student learning outcomes is one indicator to measure success in the implementation of learning process. Student learning outcomes are influenced by several factors, both external and internal factors. One of the internal factors that can affect student learning outcomes is perception. The object of perception here is the variation of the teacher's teaching style. The purpose of this study is to obtain data about students' perceptions about the variation of teaching style of chemistry teacher and student chemistry learning outcomes in SMA Negeri Kota Bengkulu academic year 2016/2017. Polpulation in this research is all students of class X of MIPA in State Senior High School of Bengkulu which amounted to 1620 students. The technique of determining the sample that will be used by the researcher is Proportional Random Sampling technique and the sample is 324 students. Data analysis used in this research is descriptive analysis, normality test, linearity, correlation and hypothesis test. Based on the analysis, the correlation coefficient value is 0.232 > 0.11 (r count t > r table), and t count > t table (4,312 > 1,967), indicating that there is a significant positive correlation between students' perception about teacher teaching style variation and student's chemistry learning result.
PERBANDINGAN PEMBELAJARAN SAINTIFIK MENGGUNAKAN MODEL KOOPERATIF TIPE STUDENT FASILITATOR AND EXPLAINING (SFE) DAN STUDENT TEAMS ACHIEVEMENT DIVISION (STAD) TERHADAP HASIL BELAJAR KIMIA Astiani, Florentina; Bahar, Amrul; Amir, Hermansyah
Alotrop Vol 3, No 1 (2019)
Publisher : FKIP University of Bengkulu

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This study aims to determine differences in student learning outcomes in chemistry learning using cooperative learning model of Student Facilitator and Explaining (SFE) type and Student Teams Achievement Division (STAD) on the subject of compound nomenclature. This research type is quasi experiment research with population that is class X MIPA in SMAN 9 Kota Bengkulu even semester of academic year 2017/2018 while sample is class X MIPA 2 and class X MIPA 4 obtained from result of normality test and homogeneity test. Student learning outcomes in this study is seen from the difference between pretest and posttest values. Data analysis used were mean value, normality test, homogeneity test and hypothesis test (t test). The average of pretest and posttest difference of the students in the experimental class I (SFE) was obtained 58.70 while in the experimental class II (STAD) obtained the value 54.25. So it can be concluded that student learning outcomes that apply SFE type cooperative model is higher than student learning outcomes that apply STAD type. After testing hypothesis with significant level (? = 0,05), then obtained tcount value> ttable that is 1.782819 > 1.67469. The results showed that there was a significant difference between experimental class I using SFE type cooperative learning model and experiment II class using STAD type.
IMPLEMENTASI KURIKULUM 2013 BAGI GURU KIMIA DI SMA NEGERI SEKOTA BENGKULU Clorawati, Ahaky Roza; Rohiat, Salastri; Amir, Hermansyah
Alotrop Vol 1, No 2 (2017)
Publisher : FKIP University of Bengkulu

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[IMPLEMENTATION OF 2013 CURRICULUM FOR CHEMICAL TEACHERS IN SMA Negeri AT BENGKULU ] This research is a description research conducted from SMA Negeri 1 to SMA Negeri 10 Kota Bengkulu for chemistry teacher in 2016/2017 academic year. This study aims to describe the implementation of the 2013 curriculum for chemistry teachers in the SMA Negeri in Bengkulu City. The population of this research is all the chemistry teachers who teach in ten SMA Negeri in Bengkulu consisting of 42 teachers. Samples were taken by proportional random sampling technique as much as 20%, but the samples taken are teachers who have implemented the curriculum 2013. Obtained final sample of 26 teachers. In this study, a questionnaire was used to collect data, including indicators of the overall implementation of the curriculum, scattered on 53 points of statement, using Likert Scale with a score of 1 to 4. which was then processed using Statistical Product Service Solution(SPSS)16 program. The results showed that the implementation of the 2013 curriculum, the average percentage of teachers who have implemented is 66.67% with the category mostly implemented. Specifically that is, planning obtained at 65,385%, implementation obtained at 57,692%. and assessment of learning result obtained at 76,923% with category mostly executed.
PERBANDINGAN PEMBELAJARAN KOOPERATIF TIPE STRUCTURED NUMBERED HEADS (SNH) DAN NUMBERED HEAD TOGETHER (NHT) TERHADAP KEMAMPUAN BERPIKIR KREATIF SISWA KELAS X MIPA SMAN 6 KOTA BENGKULU Elyani, Evi; Sumpono, Sumpono; Amir, Hermansyah
Alotrop Vol 3, No 1 (2019)
Publisher : FKIP University of Bengkulu

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The purpose of this research is to measuring the comparison of students creative thinking ability between cooperative learning model type Stuctured Numbered Heads (SNH) and Numbered Head Together (NHT) on nomenclatur of chemical compounds material in curriculum 2013 of grade X MIPA SMA Negeri 6 Bengkulu city school year 2017/2018. This research is a quasi-experimental research with total population 118 students and sample 57 students with class X MIPA D as experiment class I that apply cooperative learning model type SNH and class X MIPA B as experiment class II applying cooperative learning model type NHT. Analysis of the data used are mean values, Percentage Indicator, normality test, homogeneity test, and hypothesis test (t test). The students' creative thinking ability in this study is seen from the difference between pretest and posttest. In the experimental class I, the average value of students creative thinking ability was 51,851 while the experimental class II was 46,916. The result of t test (? = 0,05) obtained tcount> ttable is 2,645> 2,0040 indicates the accepted hypothesis  means that there is a significant difference between students' creative thinking ability using cooperative learning model type SNH and NHT, where the model of cooperative learning type SNH is more influential on students? creative thinking ability compared with cooperative learning type model NHT. 
STUDI PERBANDINGAN KEMAMPUAN BERPIKIR KRITIS SISWA MENGGUNAKAN MODEL KOOPERATIF TIPE TAKE AND GIVE DAN THINK PAIR SQUARE DI KELAS XI IPA SMA NEGERI 1 REJANG LEBONG Amalia, Windy Novita; Amir, Hermansyah; Sumpono, Sumpono
Alotrop Vol 3, No 1 (2019)
Publisher : FKIP University of Bengkulu

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The purpose of this research is to measure the difference of improvement of students' critical thinking ability by applying the cooperative model Take and give type with Think Pair Square type on salt hydrolysis material in grade XI IPA SMA Negeri 1 Rejang Lebong academic year 2017 / 2018. This study was conducted with a population of 201 students from 6 IPA classes and a sample of 68 students from 2 classes it class XI IPA 1 as experiment 1 and XI IPA 5 as experiment 2 which can be from normality and homogeneity test. The research is a kind of quasi experiment. Data analysis used is normality test, homogeneity test and hypothesis test. The students' critical thinking ability data is obtained from the pretest and posttest values at the beginning of the meeting and at the end of the meeting. This critical thinking skills test consists of 15 essay questions. The average increase in critical thinking skills for Take and give classes with Think Pair Square class is 44,757 and 51,683. By testing the hypothesis using t test with a significant level of 0.05, then obtained the value for t hitung> t table is 3.081> 1.668. The results showed that students' critical thinking skills  with the classes that apply the Think Pair Square learning model is better than the class that applied the Take and give learning model.
PERBANDINGAN HASIL BELAJAR KIMIA SISWA MENGGUNAKAN MODEL PEMBELAJARAN JIGSAW DAN THINK PAIR SHARE (TPS) DENGAN PENDEKATAN SCIENTIFIC PADA KELAS X IPA DI SMAN 3 KOTA BENGKULU TAHUN AJARAN 2018/2019 Pepi, Pepi; Amir, Hermansyah; Elvia, Rina
Alotrop Vol 3, No 2 (2019)
Publisher : FKIP University of Bengkulu

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This study aims to compare the Think Pair Share (TPS) and Jigsaw learning models with the Scientific approach to the results and interest in learning chemistry in the mole concept material in class X MIPA SMAN 3 Kota Bengkulu. This research was carried out in January-April 2019. This type of research was a quasi-experimental study with a population of all classes of X MIPA totaling 180 students. How to obtain samples through normality and homogeneity tests through cluster random sampling technique, where two classes of research samples were obtained, namely Experiment 1 class which applied Think Pair Share (TPS) learning model and experimental class 2 which applied the Jigsaw learning model. Based on the results of the study it was concluded that the two learning models proved to be able to increase students' learning outcomes and interest in chemistry and reach KKM, namely 76 with the acquisition of the N-Gain Score in the Think Pair Share (TPS) learning model of 0.71 and in the Jigsaw learning model of 0, 79 where both values of N-Gain Score have a high category. The results of students' interest in learning chemistry in the experimental class 1 were 75.93% with good categories and the results of the learning interest in the experimental class 2 were 82.01% with very good categories. The results of hypothesis testing through t test on the cognitive aspect sig. (2-tailed) of 0.002 and in the affective aspect of 0,000. It states that there are significant differences in the results and interest in learning chemistry that apply Think Pair Share (TPS) and Jigsaw learning models with the Scientific approach.
PERBANDINGAN HASIL BELAJAR SISWA DENGAN METODE INDEX CARD MATCH DAN BAMBOO DANCING Novela, Moli; Bahar, Amrul; Amir, Hermansyah
Alotrop Vol 1, No 2 (2017)
Publisher : FKIP University of Bengkulu

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[COMPARISON OF STUDENT LEARNING OUTCOMES  BEETWEN  INDEX CARD MATCH  AND BAMBOO DANCING LEARNING METHOD]  In the learning process teachers often use lecture methods so that students tend to only accept what is given by teachers and many students who feel chemistry lessons are difficult and confusing lessons. This results in low student learning outcomes. One effort that can be done by using the teacher method is varied, one of which is the method of Index Card Match and Bamboo Dancing. This research type is experiment. The population is all students in class X MIPA SMA Negeri 2 Kota Bengkulu as many as 216 students. The sample selection was done by homogeneity test with the result obtained by class X MIPA C (experimental class I) which applied Index Card Match method and X MIPA D (experiment II class) applying Bamboo Dancing method. Data analysis used is normality test, homogeneity test and t test. In this study the results of learning are seen the value of the difference between the average pretest and posttest, where obtained for class X MIPA C is 53.75 and class X MIPA D is 45.55. Then t test is obtained where t test t > t table (3,76 > 2,38), so it can be concluded that there is a significant difference between student learning result using Index Card Match method with Bamboo Dancing on chemical compound nomenclature material.
UJI MICROTETRAZOLIUM (MTT) EKSTRAK METANOL DAUN Phaleria macrocarpa (Scheff.) Boerl TERHADAP SEL KANKER PAYUDARA MCF-7 Amir, Hermansyah; Murcitro, Bambang Gonggo
Alotrop Vol 1, No 1 (2017)
Publisher : FKIP University of Bengkulu

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This study aimed to investigate research about cytotoxicity correlation level of Phaleria macrocarpa (Scheff) Boerl also known as Mahkota dewa leaves methanol extract against  MCF-7 cell in vitroto investigate the relationship between them in the goal to investigate alternative low cost herbal medicine agents to fight breast cancer. Cytotoxicity properties of samples against MCF-7 breast cancer cell lines was performed by using the Microtetrazolium (MTT) assay against MCF-7 cell line. The correlation between concentration of crude and cytotoxic activity was interpreted by statistical analyses. The study showed that P. macrocarpa leaves extracts showed cytoxicity activity against breast cancer MCF-7 cell lines which IC50 concentration showed at 15 µg/mL  Correlation between concentration of extract and cytotoxicity property (absorbance value) were founded in weak relationship (R = 0.372, R2 = 0.138).  It could be effect of many different compounds in the P. macrocarpa  leaves methanol extracts may cause the pharmacological interactions, so lower or higher concentration will be antagonistic effect on absorbance or cell viability. Further study on its mechanism pathway on revealing against breast cancer could be explored. Furthermore, the natural product derived from P. macrocarpa leaves methanol extracts have potential use as alternative drugs against breast cancer.
PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN MEDIA CALL CARD DAN TRUTH AND DARE Meilan, Wise; Rohiat, Salastri; Amir, Hermansyah
Alotrop Vol 1, No 1 (2017)
Publisher : FKIP University of Bengkulu

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This study aimed to compare the learning outcomes of students with using cooperative learning type Team Games Tournament (TGT) with media Call Card and Truth and Dare in SMA Negeri 05 Bengkulu Tengah. This research is quasy experimental with population all grade students in SMA Negeri 05 Bengkulu Tengah and the sample is X3 class as experiment class 1which implement instructional media truth and dare and X1 class  as experiment class 2 which implement instructional media Call Card. Students learning outcomes in this research extend from the difference of pretest and posttest value. In the experimental class 1 average value of students learning outcomes 69,46 while the experimental class 2 at 58,21. Through a series of statistical test done hypothesis testing using t test (0,01) was obtained t =3,13 and t table =2,39. The results of data analysis showed that shere were significant differences in student learning result between the aplication of instructional media Truth and Dare with media Call Card in hydrocarbon compound material in X grade SMA Negeri 05 Bengkulu Tengah. This can be showed t test that has been done on student learning outcomes for cognitife aspect got the result that value t table < t. The obtained t = 3,133 mean while t table = 2,397.