scholarly journals PERBEDAAN KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA YANG DIAJAR DENGAN PEMBELAJARAN KOOPERATIF THINK PAIR SHARE (TPS) DAN STUDENT TEAMS ACHIEVEMENT DIVISION (STAD) PADA PEMBELAJARAN MATEMATIKA DI MTs SWASTA UMAR BIN KHATTAB

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Dayana Lafadilla Purba ◽  
Ella Andhany
Keyword(s):  
Cooperative Learning ◽  
Creative Thinking ◽  
Math Learning ◽  
Test Experiment ◽  
Average Value ◽  
Class A ◽  
Student Teams ◽  
Class B ◽  
Post Test ◽  
Test Result

This study aims to determine whether there is a difference in the ability of students' mathematical creative thinking that is taught by cooperative learning Think Pair Share (TPS) and cooperative Student Teams Achievement Division (STAD) on math learning at Private MTs Umar Bin Khattab. This research is a quantitative research with experimental research approach. The population is a student of class VII of Private MTs Umar Bin Khattab of the academic year 2017/2018 consisting of 2 classes. Of the 2 classes taken entirely; VII-1 class of 29 students as experiment class A with Think Pair Share (TPS) and VII-2 cooperative learning as many as 30 students as experimental class B with Student Teams Achievement Division (STAD) learning, where the two classes are sampled in research. Data collection techniques are observation and description test. Before this test is established as a data collection tool, it is first tested in class VIII Private MTs Umar Bin Khattab to see the validity, reliability, difficulty and differentiation of the problem. Data analysis consists of two parts: descriptive analysis and inferential analysis. The average value of post experimental class A test result is 87,414 and the average value of post-test of experiment class B is 80,167 and the difference of post-test result value between experimental class A and B is 7,247. From result of data analysis post-test experiment class A obtained Lcount≤Ltable that is 0,096 ≤ 0,163, and data post-test experiment class B obtained Lcount≤Ltablethat is 0,148≤0,161. So the post-test data of both experimental classes is Normal distributed. From the homogeneity test of post-test data both samples are homogeneous, where C2count< C2table is 0.001 <3.841. After hypothesis testing using t-test found that tcount>ttable is 1.703> 1.676 then Ho is rejected and Ha accepted. Thus it can be concluded that there are differences in the ability of students' mathematical creative thinking that is taught by cooperative learning Think Pair Share (TPS) and Student Team Achievement Division (STAD) on math learning at Private MTs Umar Bin Khattab.

scholarly journals PERBEDAAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA MELALUI PEMBELAJARAN KOOPERATIF TIPE THINK- PAIR-SHARE DAN STUDENT TEAMS ACHIEVEMENT DIVISION BERBANTUAN GEOGEBRA PADA MATERI TRANSFORMASI DI KELAS XI SMA NEGERI 7 MEDAN

2017 ◽  
Vol 3 (3) ◽  
Author(s):  
Febry . Sirait ◽  
Pargaulan . Siagian
Keyword(s):  
Standard Deviation ◽  
Problem Solving ◽  
Cooperative Learning ◽  
Mathematical Problem ◽  
Learning Model ◽  
Average Value ◽  
Student Teams ◽  
Class B ◽  
Post Test ◽  
Essay Test

ABSTRAKPenelitian ini merupakan penelitian quasi eksperiman. Penelitian ini bertujuan untuk mengetahui apakah kemampuan pemecahan masalah matematik siswa yang diajar dengan menerapkan model pembelajaran kooperatif tipe Think-Pair-Share (TPS) berbantuan Geogebra lebih baik daripada siswa yang diajar dengan kooperatif tipe Student Teams Achievement Division (STAD) berbantuan Geogebra pada materi Transformasi.. Populasi dalam penelitian ini adalah seluruh siswa kelas XI SMA Negeri 7 Medan semester genap, yang terdiri dari 9 kelas pararel. Sedangkan yang menjadi sampel dalam penelitian ini adalah siswa sebanyak dua kelas, yaitu kelas XI IPA 4 sebagai kelas eksperimen A sebanyak 39 orang dan kelas XI IPA 6 sebagai kelas eksperimen B sebanyak 39 orang. Kelas eksperimen A menggunakan model pembelajaran kooperatif tipe Think-Pair-Share (TPS) dan kelas eksperimen B menggunakan model pembelajaran kooperatif tipe Student Teams Achievement Division (STAD). Untuk memperoleh data yang diperlukan dalam penelitian ini digunakan essay test sebanyak 5 soal dan telah dinyatakan valid oleh tim ahli. Hasil Uji validitas dengan rtabel = 0,316 diperoleh bahwa soal tersebut valid dari 5 soal. Dan hasil uji reliabilitas pada soal yang diberikan diperoleh sebesar 0,81. Sebelum pengujian hipotesis, terlebih dahulu diuji normalitas dan homogenitas data. Dari pengujian ini diperoleh bahwa sampel berasal dari populasi yang berdistribusi normal dan memiliki varians yang homogen. Dari analisis data pada kelas eksperimen A diperoleh nilai rata-rata pre test 43,33 dan simpangan baku pre test 8,66 sedangkan nilai rata-rata post test 83,13 dan simpangan baku post test 10,35. Pada kelas eksperimen B diperoleh nilai rata-rata pre test 40,97 dan simpangan baku pre test 8,84 sedangkan nilai rata-rata post test 75,33 dan simpangan baku post test 11,64. Dari analisis data post test dengan menggunakan uji-t pada taraf = 0,05 diperoleh thitung = 3,13 dan  ttabel = 1,662 yang ternyata thitung > ttabel yaitu, 3,13 > 1,662 maka H0 ditolak dan Ha diterima. Maka dapat disimpulkan bahwa kemampuan pemecahan masalah matematik siswa yang diajar dengan menerapkan model pembelajaran kooperatif tipe Think-Pair-Share (TPS) berbantuan Geogebra lebih baik daripada siswa yang diajar dengan kooperatif tipe Student Teams Achievement Division (STAD) berbantuan Geogebra pada materi Transformasi. Kata Kunci: kemampuan Pemecahan Masalah matematik, pembelajaran kooperatif tipe TPS dan STAD ABSTRACTThis research is a quasi experimental research. This study aims to determine whether the problem solving ability of mathematical students who are taught by applying cooperative learning model type Think-Pair-Share (TPS) with Geogebra is better than students who are taught cooperatively by Student Teams Achievement Division (STAD) with Geogebra on Transformation material. The population in this study is all students of class XI SMA Negeri 7 Medan even semester, which consists of 9 parallel classes. While the sample in this study is the students as much as two classes, namely class XI IPA 4 as a class of experiments A as many as 39 people and class XI IPA 6 as a class experiment B as many as 39 people. The experimental class A uses the Think-Pair-Share (TPS) model of cooperative learning and experimental class B using the Student Teams Achievement Division (STAD) cooperative learning model. To obtain the necessary data in this study used the essay test of 5 questions and has been declared valid by a team of experts. Result of validity test with rtabel = 0,316 obtained that matter is valid from 5 problem. And reliability test result on given problem is obtained equal to 0,81. Before testing the hypothesis, first tested the normality and homogeneity of the data. From this test it is found that the sample comes from a population that is normally distributed and has a homogeneous variance. From the data analysis in experiment class A obtained the average value of pre test 43,33 and standard deviation of pre test 8,66 while the average value of post test 83,13 and standard deviation post test 10.35. In the experimental class B obtained the average value of pre test 40.97 and standard deviation of pre test 8.84 while the average post test value of 75.33 and standard deviation post test 11.64. From the analysis of post test data by using t-test at the level = 0.05 obtained tcount = 3.13 and ttable = 1.662 which turns thitung> ttable ie, 3.13> 1.662 then H0 rejected and Ha accepted. Then it can be concluded that students' mathematical problem solving skills that are taught by applying cooperative learning model of Think-Pair-Share type (TPS) with Geogebra is better than students who are taught cooperatively by Student Teams Achievement Division (STAD) with Geogebra on Transformation materials. Keywords: mathematical problem solving ability, cooperative learning type TPS and STAD

THE CORRELATION OF STUDENTS’ INTEREST TO CHARACTER AND THEIR ACHIEVEMENT ON ATOMIC STRUCTURE TOPIC

2020 ◽  
Vol 4 (2) ◽  
pp. 77
Author(s):  
Yohanita Nirmalasari
Keyword(s):  
Linear Regression ◽  
Atomic Structure ◽  
Teaching Method ◽  
Observation Data ◽  
Type Number ◽  
Average Value ◽  
Class A ◽  
Post Test ◽  
Essay Test ◽  
Test Result

This research aims to know 1) students’ interest, 2) discipline character, 3) students’ achievement, 4) correlation between students’ interest to discipline character and their achievement on atomic structure topic. Sample research were 20 students from class A of SMAK St. Petrus Kewapante which is collected randomly. Teaching method used cooperative learning type number head together (NHT). The technique of data collection was essay test, questionnaires and observation, which analyzed by descriptive quantitative and multiple linear regression. The result showed 1) based on teacher observation data indicated students’ interest as best category (90%) and good category (10). 2) students’ disciplinary as best category (80%) and good category (20%), while 100% as best category based on teacher’s observation data. 3) students’ achievements result showed average value in 51,75 and 80,50 as pre-test and post-test result respectively. 4) there is no correlation between students’ interesting to disciplinary character and their achievement’s in learning chemistry.

PERBANDINGAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF TIPE STUDENT TEAMS ACHIEVEMENT DIVISION DENGAN TEAMS GAMES TOURNAMENTS DI SMP NEGERI 35 MEDAN

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Faizah Ibrahim Bakoban ◽  
Zul . Amry
Keyword(s):  
Problem Solving ◽  
Cooperative Learning ◽  
Mathematical Problem ◽  
Simple Random Sampling ◽  
Learning Model ◽  
Mathematical Problem Solving ◽  
Average Value ◽  
Student Teams ◽  
Class 1 ◽  
Post Test

ABSTRAKPenelitian ini bertujuan untuk melihat bahwa kemampuan pemecahan masalah matematika siswa menggunakan model pembelajaran kooperatif tipe Student Teams Achievement Division lebih baik daripada model pembelajaran kooperatif tipe Teams Games Tournaments pada materi persamaan linear dua variabel. Jenis penelitian ini adalah eksperimen semu. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII Semester II SMP N 35 Medan  yang terdiri dari 8 kelas dengan jumlah keseluruhan siswa 318 orang. Pengambilan sampel dilakukan dengan cara simple random sampling dengan mengambil 2 kelas dari 8 kelas secara acak yaitu kelas eksperimen 1 yang berjumlah 36 orang dan kelas eksperimen 2 yang berjumlah 36 orang. Instrumen yang digunakan untuk mengetahui kemampuan pemecahan masalah matematika siswa adalah tes kemampuan pemecahan masalah yang telah divalidasi dalam bentuk uraian. Dari hasil penelitian menunjukkan bahwa dengan selisih data pretest post test dari kelas eksperimen 1 dengan model pembelajaran kooperatif tipe STAD dan kelas eksperimen 2 dengan model pembelajaran kooperatif tipe TGT diperoleh nilai rata-rata kelas eksperimen 1 sebesar 27,61 dan nilai rata-rata kelas eksperimen 2 sebesar 20,083. Hasil uji t  pihak kanan dengan dk = 70 dan a = 0,05, diperoleh thitung = 2,935 dan ttabel = 1,668 sehingga thitung > ttabel yaitu 2,935 > 1,668 maka Ha diterima, dengan demikian  diperoleh kesimpulan bahwa hasil akhir penelitian menunjukkan bahwa STAD lebih efektif untuk matematika dibandingkan dengan TGT .Karena penyediaan untuk keterlibatan belajar yang lebih tinggi, ini terbukti menjadi strategi pembelajaran aktif. Kata Kunci : Model pembelajaran kooperatif tipe Student Teams Achievement Division (STAD) dan Teams Games Tournaments (TGT), Pemecahan Masalah Matematika ABSTRACTThis study aims to see that students' mathematical problem solving ability using cooperative learning model of Student Teams Achievement Division is better than cooperative learning model of Teams Games Tournaments on two variable linear equations. This type of research is a quasi experiment. The population in this study is all students of class VIII Semester II SMP N 35 Medan consisting of 8 classes with total students 318 people. Sampling was done by simple random sampling by taking 2 classes from 8 classes at random that is experiment class 1 which amounted to 36 people and experiment class 2 which amounted to 36 people. The instrument used to determine students' mathematical problem solving abilities is a validated problem-solving test in the form of a description. The result of this research shows that with the difference of pretest post test data from experimental class 1 with STAD type cooperative learning model and experiment 2 class with cooperative learning model type TGT obtained average value of experiment class 1 is 27,61 and experiment class average value 2 by 20,083. The result of right side t test with dk = 70 and (= 0,05, obtained thitung = 2,935 and ttable = 1,668 so thitung> t table that is 2,935> 1,668 Ha accepted, thus obtained conclusion that end result of research indicate that STAD is more effective for math than TGT. Because of the provision for higher learning engagement, this proves to be an active learning strategy. Keywords: Cooperative learning model of Student Teams Achievement Division (STAD) and Teams Games Tournaments (TGT), Mathematical Problem Solving 

scholarly journals PENINGKATAN HASIL BELAJAR AKUNTANSI MENGGUNAKAN STUDENT TEAMS ACHIEVMENT DIVISION

2018 ◽  
Vol 1 (1) ◽  
pp. 95-110
Author(s):  
Fitri Nurlaili ◽  
Idmi Idmi ◽  
Haslinda Haslinda
Keyword(s):  
Action Research ◽  
Cooperative Learning ◽  
Learning Outcomes ◽  
Learning Model ◽  
Research Subjects ◽  
Cognitive Aspect ◽  
Student Activity ◽  
Average Value ◽  
Student Teams ◽  
Post Test

The purpose of this research were to improve the learning outcomes and their activities in accounting learning with cooperative learning model Student Teams Achievment Division (STAD) in grade  XI AK  students at SMK Madinatul Hadid Cilegon.This research used Classroom Action Research (CAR) consists of two cycles. Each cycle consisted of four stages: planning, acting, observing, and reflecting. The research subjects were the students in XI AK in SMK Madinatul Hadid Cilegon with 21 students and the teacher as the collaborator team.The result of this research showed that the application of  STAD learning model could improve the  student activity from cycle I was 39% up to 45%, there was increasing 6%. While in cycle II, the activity became 66% in first meeting and increased to 82% in second meeting, there was increasing 16%. In cognitive aspect, the average scores of pretest was 57. In cycle I, after post test  the score 72. In the second cycle, the average value increased to 85. Students, who had score above the KKM was 47% in first cycle  while in the second cycle 100% of student could reach the KKM.

PENINGKATAN HASIL BELAJAR SISWA KELAS X IPA PADA PENERAPAN TRIGONOMETRI MELALUI STAD

2021 ◽  
Vol 8 (3) ◽  
pp. 55-61
Author(s):  
Supratik Supratik
Keyword(s):  
Cooperative Learning ◽  
Student Learning ◽  
Learning Outcomes ◽  
Creative Thinking ◽  
Mathematics Learning ◽  
Student Response ◽  
Design Data ◽  
Average Value ◽  
Improve Student Learning ◽  
Student Team

AbstrakHasil rata-rata tes siswa pada materi penerapan trigonometri rendah yaitu 52 dan hal ini tidak mencapai KKM di SMA Negeri 22 Palembang yaitu 65. Oleh karena itu diperlukan alternatif model pembelajaran yang tepat untuk meningkatkan aktivitas, pola berpikir kritis dan kreatif serta hasil belajar matematika siswa. Salah satu alternatifnya adalah pembelajaran melalui pembelajaran kooperatif tipe STAD. Tujuan penelitian ini adalah untuk mendeskripsikan penerapan pembelajaran kooperatif tipe STAD yang dapat meningkatkan hasil belajar siswa dan mendeskripsikan tanggapan siswa dalam penerapan pembelajaran kooperatif tipe STAD. Penelitian ini menggunakan desain penelitian tindakan kelas. Teknik pengumpulan data yang digunakan adalah observasi, angket, dan tes. Setelah dilakukan analisis data diperoleh kesimpulan bahwa: 1) Penerapan pembelajaran melalui pembelajaran kooperatif tipe STAD ( Student Team Achievement Division ) yang dilakukan dalam penelitian ini efektif, karena dapat meningkatkan hasil belajar siswa pada mata pelajaran matematika, mata pelajaran penerapan trigonometri pada siswa kelas X IPA6 yang berjumlah 40 orang. Hal ini terlihat pada persentase hasil aktivitas siswa pada pembelajaran tindakan I mencapai 86,36% dan pada tindakan II mencapai 89,09% dengan predikat sangat baik, dan nilai rata-rata hasil tes akhir tindakan I mencapai 67,3% dan pada Tindakan II mencapai 72,25% dengan persentase nilai rata-rata yang ditetapkan sebesar 65% yang berarti telah mencapai kriteria keberhasilan. 2) Berdasarkan hasil angket respon siswa diketahui bahwa respon siswa terhadap pembelajaran penerapan trigonometri melalui pembelajaran kooperatif tipe STAD sangat positif.Kata kunci: hasil belajar, penerapan trigonometri, kooperatif, STAD. AbstractThe average result of student tests on the material for applying trigonometry is low, namely 52 and this does not reach the KKM at SMA Negeri 22 Palembang, which is 6. Therefore, an alternative learning model is needed. appropriate for increasing activity, critical and creative thinking patterns as well as student mathematics learning outcomes. One alternative is learning through cooperative learning type STAD . The purpose of this study is to describe the application of cooperative learning type STAD which can improve student learning outcomes.and describe student responses in the application of cooperative learning type STAD to improve learning outcomes. This study used a classroom action research design. Data collection techniques used were observation, questionnaires, and tests. After data analysis was carried out , it was concluded that: 1) The application of learning through cooperative learning type STAD ( Student Team Achievement Division ) which was carried out in this study was effective, because it can improve student learning outcomes in mathematics, the subject of the application of trigonometry in class X IPA6, amounting to 40 people. This can be seen in the percentage of student activity results in learning in action I reached 86.36% and in action II reached 89.09% with the predicate very good, and the average value of the final test results in action I reached 67.3% and at Action II reaches 72.25% with the percentage of the average value set is 65%, which means it has reached the success criteria. 2) Based on the results of the student response questionnaire, it was found that the student's response to learning the application of trigonometry through cooperative learning type STAD was very positive.Keywords: learning outcomes, application of trigonometry, cooperative, STAD.

scholarly journals PENGARUH MODEL COOPERATIVE LEARNING TIPE STUDENT TEAMS ACHIEVEMENT DIVISION TERHADAP KETERAMPILAN LAY-UP SHOOT BOLA BASKET

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Davi Sofyan
Keyword(s):  
Cooperative Learning ◽  
Sampling Technique ◽  
Control Group ◽  
Student Teams ◽  
Post Test ◽  
Quasi Experimental ◽  
The Mean ◽  
The Difference ◽  
Experimental Group ◽  
Cluster Random Sampling

The purpose of this study was to determine how much influence the cooperative learning model type student team's achievement division has on basketball shoot lay-up skills. The research method used in this research is a quasi-experimental method. The type of research design used was the non-equivalent group design. The population in this study were students of class XI SMA Negeri 1 Majalengka in 2019 totaling 424 students. The sampling technique used in this study was cluster random sampling technique. The sample in this study amounted to 214 students consisting of class XI IPS 1-4 and XI MIPA 7-8. The experimental group class XI IPS 1-2 and XI MIPA, control group class XI IPS 3-4 and XI MIPA 8. The results showed that the mean pre-test lay-up shoot of the experimental group was 4.09 while the control group was 3.92. The mean post-test shoot lay-up of the experimental group was 6.76 while the control group was 4.72. Furthermore, by looking at 95% confidence interval of the difference, there is a difference between the shoot lay-up results of the experimental group and the control group, which is -0.190 to 2.412. Thus, it can be concluded that STAD is effective in improving basketball shoot lay-up skills.

scholarly journals PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBERED HEAD TOGETHER (NHT) UNTUK MENINGKATKAN KEAKTIFAN DAN PRESTASI BELAJAR MATA PELAJARAN ALAT UKUR SMK MUHAMMADIYAH 1 IMOGIRI TAHUN AJARAN 2014/2015

TAMAN VOKASI ◽  
2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Saleh Saleh ◽  
Samsul Hadi
Keyword(s):  
Student Achievement ◽  
Cooperative Learning ◽  
Achievement Test ◽  
Measuring Instrument ◽  
Learning Achievement ◽  
Average Value ◽  
The Third ◽  
Tenth Grade ◽  
Post Test ◽  
Academic Year

The general objective of this research is to know the improvement of the activity and achievement study of measuring instrument subject for tenth grade TKR 4th Students of SMK Muhammadiyah 1 Imogiri in Academic Year 2014/2015. The hypothesis of this research is the model of cooperative learning type NHT to be able to improve the activity and achievement study of measuring instrument subject for tenth grade TKR 4th students of SMK Muhammadiyah 1 Imogiri in Academic Year 2014/2015. The type of this research is a classroom action research which done by cooperative learning. The subject of this research is the tenth grade TKR 4th students of SMK Muhammadiyah 1 Imogiri which consists of 35 students. The object of this research is students’ activity and achievement study which got from the implementation model of cooperative learning type NHT. This research is conducted 3 cycle by using technique of collecting the data which conducted through test, observation, and documentation. Technical data analyst for observation sheet and achievement test data analyzed quantitative description with statistical formula. results of using the type Cooperative Learning Model Numbered Head Together (NHT) had showed an improvement in learning achievement and activity of the tenth grade students of SMK Muhammadiyah 1 TKR 4 Imogiri on Subjects of each cycle the measuring instrument. It is evidenced by an improvement in the average yield observation sheet activeness percentage of students in the first cycle of 44.14%  and an improvement  in the second cycle of 17.43% to 61.57% and in the third cycle improved by 21.29% to 82.86%. otherwise it is based on achievement test on the first cycle the average value obtained pre-test 60.71 and the average value of post test 69.57 so that student achievement increased by 8.86 and the second cycle of the average values obtained pre test 62.28 and the average value of post test 75.42 increased learning achievement tests of 13.14 and in the third cycle the average value of pre-test 65.14 and the average value of post test 83.42. So that student achievement increased by 18.28. It can be concluded that the model of cooperative learning can enhance the activity and students’ achievement.

scholarly journals PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA

2020 ◽  
Vol 3 (2) ◽  
pp. 163
Author(s):  
Nur Abida
Keyword(s):  
Data Collection ◽  
Cooperative Learning ◽  
Learning Outcomes ◽  
Mathematics Learning ◽  
Learning Model ◽  
Class V ◽  
Student Activities ◽  
Average Value ◽  
Class A ◽  
School Year

This research is motivated by the low mathematics learning outcomes of students of class V A of SD Negeri 136 Pekanbaru, with an average value of 68.25 and of 34 students only 11 students who reach the minimum completeness criteria (KKM). This research is a classroom action research (CAR) conducted aimed at improving the learning outcomes of class A students by applying the Group investigation (GI) type of cooperative learning model. The subjects of this study were class V A students in the 2018/2019 school year. Data collection instruments in this study were teacher activity sheets and student activities and learning outcomes. It can be seen from the results of the implementation of classroom actions carried out 2 cycles, namely the first cycle of students who completed as many as 23 people (67.65%) and students who did not complete 13 people (31.70%), in the second cycle the cycle students completed completely (100 %). There are no more students who receive grades below the KKM. The results showed that the application of the Group investigation (GI) type of cooperative learning model could improve the mathematics learning outcomes of students in class V A of SD Negeri 136 Pekanbaru.

scholarly journals IMPLEMENTATION OF PROBLEM-BASED LEARNING MODEL TO INCREASE SELF-CONFIDENCE AND UNDERGRADUATE STUDENTS UNDERSTANDING OF THE ELECTROCHEMISTRY CONCEPT IN CHEMICAL EDUCATION

2020 ◽  
Vol 17 (35) ◽  
pp. 216-226
Author(s):  
Ratu Betta RUDIBYANI
Keyword(s):  
Undergraduate Students ◽  
Problem Based Learning ◽  
Sampling Technique ◽  
Control Group ◽  
Chemistry Teaching ◽  
Class A ◽  
Self Confidence ◽  
Class B ◽  
Post Test ◽  
Quasi Experimental

Chemistry is one of the scientific disciplines considered difficult for students to understand its microscopic and macroscopic concepts. Students also claim that this discipline is tedious and complicated. They are unable to connect what is shown in the visual structure to the process and phenomenon. In the context of self-motivation among university students, there is a higher chance of expanding the stimulation of learning. This study aimed to improve self-confidence and the mastery of concepts of chemistry teaching students using problem-based learning. The quasi-experimental method was used with the design of the non-equivalent pre-test-post-test control group. The population included all students in the electrochemistry class at Lampung University in 2019. The purposeful sampling technique employed divided the sample into two groups. The first group was called Class A and was considered as the experimental class - using problem-based learning -. The second group, Class B, was recognized as the control class - using the conventional model in which the teacher applied the speech method in the delivery of materials during the class -. Class A's self-confidence and mastery of concepts have a higher nGain value than class B, and the result of the effect size is that class B has a more significant effect than class A. Based on the outcome, one can conclude that problem-based learning has a significant influence on improving self-confidence and mastery of concepts on the electrochemical theme.

scholarly journals Pengaruh gradasi agregat terhadap nilai karakteristik aspal beton (ac-bc)

2019 ◽  
Vol 2 (1) ◽  
pp. 27
Author(s):  
Beyzulnandar Jauhari ◽  
Nurhayati Doda
Keyword(s):  
Research Result ◽  
Mix Design ◽  
Class A ◽  
Class B ◽  
Test Result

Hasil penelitian gradasii menunjukkan bahwa Campuran AC-BC yang di gunakan di lapangan dengan masing masing titik/Sta pengambilan sample nilainya masih di atas dan kurang dar isyarat spesifikasi dan JMF(Job Mix Formula)  yaitu 5.75%.Pada hasil gradasi Agregat material Klas B dan Klas A masing  masing titik/Sta tidak memenuhi atau melebihi syarat spesifikasi dan JMD  (Job Mix Design).Dimana telah di tunjukkan dari hasil penelitian masing titik/sta   Material KlasB 95.40 % - 92.67%  Dan pada  Material Klas A 60.79% - 50.70%..       Pada hasil pengujian core drill menunjukkan bahwa ketebalan aspal pada masing masing titik/Sta pengambilan sample  yang di lapangan tidak sesuai dengan spesifikasi yaitu nilainya masih  di atas dan kurang dari ketentuan spesifikasi.Dilihat dari masing  masing titik/Sta pengambilan sample pengujian yaitu 5.75 % .Maka dapat di lihat nilai tersebut tidak memenuhi syarat. The gradation result showed that the mixing of AC-BC which used in this research with each point/Sta of collecting sample is still above and less from the specification requirements and JMF (Job Mix Formula) 5,75%In gradation result aggregate of material class B and class A, each point/Sta is not fulfill or more than the specification requirements and JMD (Job Mix Design). It showed that from the research result each point/Sta material class B 95,40% - 92,67% and on Material class A 60,79% - 50,70%.From core drill test result showed that the asphalt thickness in each point/sta of collecting samples in the field is not appropriate with specification which the value is above and less from the specification requirements. It can be seen from each point/Sta which the test is 5,75%. So the value is not appropriate with the requirements

Sign in / Sign up

Export Citation Format

Share Document