The Effect of LC 5E Learning Model Combined with Make a Match on the Cognitive Learning Outcomes of High School Students on Acid Base Materials

Chemistry materials required that students must memorize and understand all of the concepts. Acid base is one of chemistry materials which is considered difficult. One solution to overcome the difficulty in learning acid base materials is change the learning method from one way to two ways that more focus on student (student centered) with reference to the constructivist approach LC 5E and cooperative learning Make a Match. Therefore, this research was conducted with the aim to: (1) describe the feasibility of students who learned acid-base materials use the LC 5E-Make a Match learning model,(2)determine differences in students cognitive learning outcomes that learned using the LC 5E-Make a Match learning model and that learned to use the LC 5E learning model in acid-base materials. This research used a quasi-experimental design with design models of two groups. The two classes were given same acid-base materials with different learning model. The average of student cognitive learning outcomes that learned using the LC 5E-Make a Match learning model (=84,06) was higher than students that using the LC 5E (79,89)

The Effect of Learning Management System (LMS) Assistance in Think-Pair-Share Strategy on Students’ Learning Outcomes and Motivation

Abstract: The purpose of this study was to determine the effect of Learning Management System (LMS) assistance in Think-Pair-Share (TPS) strategy and the effect of Think-Pair-Share (TPS) strategy on students’ learning outcomes and motivation. Fourty students of two science classes were involved in this study. The treatment instruments used in this study were acid-base teaching materials, syllabus, student worksheets (LKPD), lesson plans (RPP), and Learning Management System (LMS). The measurement instrument employed a test question sheet and a student motivation questionnaire. The results showed differences in learning outcomes between students who are taught with the assistance of LMS in TPS strategy compared to students who are taught using TPS only are observed. There are differences in motivation among participants. Students who are taught with the assistance of LMS in TPS strategy compared to students who are taught with TPS strategy only

Effect of POGIL Learning Model toward Students' Critical Thinking Skills on Buffer Solution Material

One of the essential skills students should possess in the 2013 Curriculum is critical thinking. However, students' critical thinking skills in buffer solution material are considered low. Therefore, this study aims to identify the different critical thinking skills between students who attend a process-oriented guided oriented learning (POGIL) with and without science, environmental, technology, and society (SETS) approach on buffer solution material. This research uses quasi-experimental with a posttest-only control group design. The research results reveal that: (1) both POGIL learning models with and without the SETS approach are classified to be successfully carried out; (2) different critical thinking skills are found in students who learn using the POGIL learning model with and without the SETS approach on buffer solution material. The POGIL learning model with the SETS approach carries better students' critical skills results than the one with no SETS approach on the buffer solution material

ANALYSIS AND SIMULATION OF RELIABILITY IMPROVEMENT IN GEAR PUMP MACHINE USING LIFE CYCLE COST METHOD IN XYZ COMPANY

Abstract. Gear pump machine 51-98P01 is a machine that is available at XYZ company, which functions as a transportation machine for raw materials from one production process. Because of its function, if there is a downtime occurs on the machine, production process will stop operating because the raw material cannot be flowed. Those problems caused a large amount of expenses that company should pay because late of production. Downtime occurs due to several factors, such as failure to components on the machine, age that has exceeded the optimal age limit, and the number of maintenance crew that is not optimal. To solve the problems, the Life Cycle Cost (LCC) method is used to determine the optimum age of the machine and the optimal number of maintenance crew using the Life Cycle Cost (LCC) method. In addition, a calculation of the proposed maintenance time interval is also carried out to achieve a certain reliability value using a simulation of reliability improvement to see the effect of reliability on the total LCC. Based on data processing using the LCC method, it is known that LCC in 2018 is Rp1,333,195,316 while the optimum LCC is Rp.690,180,267 with optimal machine life of six years and the number of crew maintenance is one person. Simulation of reliability improvement that carried out on the gear pump machine components shows a decrease of  total LCC of the machine.Keywords: Downtime, Failure Cost Life Cycle Cost, Maintenance Crew, Reliabilit

PENINGKATAN KUALITAS PEMBELAJARAN MATAKULIAH DASAR-DASAR KIMIA ANALISIS MELALUI STRATEGI THINK PAIR SHARE (TPS) DENGAN PENGORGANISASIAN PEMBELAJARAN MENURUT TEORI ELABORASI

Abstrak Telah dilakukan penelitian yang berjudul Peningkatan Kualitas Pembelajaran Matakuliah Dasar-dasar Kimia Analisis. Penelitian ini mempunyai tujuan untuk mengetahui peningkatan kualitas proses belajar mengajar ditinjau dari aspek kualitatif maupun kuantitatif. Penelitian ini dirancang sebagai penelitian tindakan kelas tiga siklus, dengan mengambil pokok bahasan Ruang Lingkup Kimia Analisis,  Analisis Kation, Analisis Anion, Pengolahan Data Analitik, dan Gravimetri. Subyek penelitian adalah mahasiswa S1 Pendidikan Kimia yang sedang mengambil perkuliahan Dasar-dasar Kimia Analisis pada semester gasal 2015 – 2016, dengan jumlah mahasiswa sebanyak 35 orang. Instrumen penelitian terdiri dari instrumen pembelajaran, yaitu bahan ajar yang diwajibkan dan suplemen bahan ajar (hand out). Instrumen pengukuran dibedakan menjadi dua macam, yaitu instrumen pengukuran kualitatif (lembar observasi), serta instrumen pengukuran kuantitatif (Lembar Kerja Mahasiswa dan tes tertulis). Data kuantitatif dikelompokkan berdasarkan rentangan skor tertentu, dan hasilnya disimpulkan berdasarkan patokan kemampuan yang berlaku di Universitas Negeri Malang. Berdasarkan analisis data, maka dari penelitian ini dapat disimpulkan bahwa penerapan pembelajaran melalui Strategi TPS dengan Pengorganisasian Pembelajaran menurut Teori Elaborasi pada matakuliah Dasar-dasar Kimia Analisis dapat meningkatkan kualitas proses belajar mengajar ditinjau dari aspek kualitatif maupun kuantitatif. Secara kualitatif peningkatan itu dapat diketahui dari kemampuan kooperatif mahasiswa dalam menyelesaikan tugas yang diberikan. Indikator peningkatan tersebut dapat dilihat dari aspek-aspek saling ketergantungan yang positif, interaksi langsung antar mahasiswa, pertanggungjawaban individu, dan keterampilan berinteraksi antar individu dan kelompok Secara kuantitatif dapat diketahui dari penilaian aspek kognitif, yaitu hasil LKM dan hasil ujian pada pokok bahasan Ruang Lingkup Kimia Analisis,  Analisis Kation, Analisis Anion, Pengolahan Data Analitik, dan Gravimetri. Berdasarkan hasil analisis data, dapat disimpulkan telah terjadi peningkatan kemampuan mahasiswa siklus demi siklus. Kata kunci: Think, Pair, Share (TPS), Teori Elaborasi Abstract Has conducted a study entitled Improving the Quality Learning Course Fundamentals of Chemical Analysis. The purpose of this study was to determine the improvement of the quality of teaching and learning process in terms of qualitative and quantitative aspects. The study was designed as an action research three cycles, with the subject taking Scope Chemical Analysis, Analysis of cation, anion analysis, Analytical Data Processing, and Gravimetry. Subjects were students of S1 Chemical Education who were taking the course Fundamentals of Chemical Analysis in odd semester of 2015-2016, the number of students as many as 35 people. The research instrument consists of instruments of the learning and teaching materials that are required to supplement teaching materials (handouts). Measurement instruments can be divided into two kinds, namely the qualitative measurement instruments (observation sheet), as well as quantitative measurement instruments (Worksheet Students and written test). Quantitative data grouped by specific range of scores, and the result was concluded based benchmark capabilities in force in Universitas Negeri Malang (UM). Based on data analysis, it can be concluded from this study that the application of learning through TPS with Organizing Learning Strategies by Elaboration Theory on the course Fundamentals of Chemical Analysis can improve the quality of teaching and learning process in terms of qualitative and quantitative aspects. Qualitatively it can be seen from the increase in cooperative ability students in completing a given task. Indicators of the increase can be seen from the aspects of positive interdependence, direct interaction between students, individual responsibility, and the skills of interaction between individuals and groups Quantitatively it can be seen from the assessment of cognitive aspects, namely the results of the MFI and the test results on the subject of the Scope of Chemistry analysis, analysis of cation, anion analysis, Analytical Data Processing, and Gravimetry. Based on the analysis, we can conclude there has been increased ability of students cycle-by-cycle. Keywords: think, pair, share (TPS), elaboration theor

Pengaruh Strategi Project Based Learning (Pjbl) terhadap Kemampuan Berpikir Kritis Siswa Kelas XI IPA pada Materi Koloid

The 21st century education aims to develop the ability of intelligence of students in order to resolve the problems faced in real life. Project-Based Learning is one instructional strategies to develop the skills required in the 21st century. Through a given project, students are not only required to achieve the learning objectives that have been set, but students will be trained to face the world of work that requires their ability to access, mesintesis, communicating information, and work together to solve complex problems so as to improve the ability of students critical thinking. This research is a quasi-experimental research (quasy experiment) with posttest only control group design. This research aims to determine the influence of Project Based Learning Strategy (PjBL) to the critical thinking skills of students of class XI IPA at SMAN 1 Malua on colloidal material. The research population includes students of class XI IPA at SMAN 1 Malua, with random cluster sampling technique sampling. Data were analyzed using independent sample t-test in SPSS 20 for windows at the 0.05 level of significance. The result showed that the significance level of critical thinking skills of 0.001 which indicates that there are differences between students' critical thinking skills that learned using a strategy of Project Based Learning (PjBL) with students that learned using conventional methods.Pendidikan abad 21 bertujuan untuk membangun kemampuan intelegensi siswa dalam pembelajaran agar mampu menyelesaikan permasalahan yang dihadapi. salah satu strategi pembelaj aran di abad 21 yang mengembangkan keterampilan siswa ialah Project Based Learning. Melalui proyek yang diberikan, siswa tidak hanya dituntut untuk mencapai tujuan pembelajaran yang telah ditetapkan, tetapi siswa akan lebih terlatih menghadapi dunia kerja yang membutuhkan kemampuan mereka dalam mengakses, mesintesis, mengomunikasikan infomasi, dan bekerja sama memecahkan masalah yang kompleks sehingga dapat meningkatkan kemampuan berpikir kritis siswa. Penelitian ini merupakan penelitian eksperimen semu (quasy experiment) dengan rancangan penelitian posttest only control group design. Penelitian ini bertujuan untuk mengetahui pengaruh strategi Project Based Learning (PjBL) terhadap kemampuan berpikir kritis siswa kelas XI IPA di SMAN 1 Malua pada materi koloid. Populasi penelitian meliputi siswa kelas XI IPA SMA Negeri 1 Malua, dengan teknik pengambilan sampel cluster random sampling. Data dianalisis menggunakan independent sample t-test pada program SPSS 20 for windows pada taraf signifikasi 0,05. Hasil analisis data menunjukkan bahwa taraf signifikasi kemampuan berpikir kritis sebesar 0,001 yang menunjukkan bahwa terdapat perbedaan kemampuan berpikir kritis antara siswa yang dibelajarkan menggunakan strategi Project Based Learning (PjBL) dengan siswa yang dibelajarkan menggunakan metode konvensional

Pengaruh Penggunaan Jurnal Belajar Dalam Model Pembelajaran Learning Cycle 6e Terhadap Kesadaran Metakognitif Siswa Sman 8 Malang Pada Materi Redoks

This study aims to know the different influence of journal learning in the implementation of Learning Cycle 6E for metacognitive awarness of the students SMAN 8 Malang in the material of redoks. The research method is using quasy experiment with the kinds of pretest and posttest design. The data is collected by 52 statements in questioners of metacognitive awarness. The result of this study shows that there is the different metacognitive awarness for students who are learning by Learning Cycle 6E guided by journal of learning, and the students who are learning by Learning Cycle 6E without journal of learning.Penelitian ini bertujuan untuk mengetahui perbedaan pengaruh jurnal belajar dalam model pembelajaran Learning Cycle 6E terhadap kesadaran metakognitif siswa SMAN 8 Malang pada materi redoks. Rancangan penelitian yang digunakan adalah Quasy Experiment Design dengan jenis pretest posttest design. Data dikumpulkan dengan 52 pernyataan kuesioner kesadaran metakognitif. Hasil penelitian menunjukkan bahwa ada perbedaan kesadaran metakognitif siswa yang dibelajarkan dengan model pembelajaran Learning Cycle 6E dipadu jurnal belajar dan menggunakan model pembelajaran Learning Cycle 6E tanpa jurnal belajar pada materi redoks

PENGARUH REAL LABORATORY DAN VIRTUAL LABORATORY TERHADAP KUALITAS PROSES PADA MATERI KESETIMBANGAN KIMIA

Kesetimbangan kimia adalah salah satu materi kimia yang dianggap memiliki beberapa konsep sulit, sehingga harus disampaikan menggunakan model pembelajaran untuk meningkatkan pemahaman konsep peserta didik, salah satunya dengan model pembelajaran Learning Cycle 5E menggunakan real laboratory dan virtual laboratory. Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan model pembelajaran Learning Cycle 5E dengan real laboratory dan virtual laboratory terhadap kualitas proses pembelajaran pada materi kesetimbangan kimia. Rancangan penelitian ini menggunakan rancangan eksperimen semu dengan analisis data deskriptif. Populasi penelitian ini adalah siswa kelas XI MIA SMA Negeri 2 Malang, menggunakan convenience sampling dan diperoleh sampel penelitian siswa kelas XI MIA 4 (LC 5E dengan real laboratory) dan siswa kelas XI MIA 5 (LC 5E dengan virtual laboratory). Instrumen yang digunakan berupa instrumen perlakuan yang terdiri dari RPP dan bahan ajar, serta instrumen pengukuran yang terdiri dari lembar RTOP, lembar observasi keterlaksanaan pembelajaran, serta lembar penilaian afektif dan psikomotorik. Hasil penelitian menunjukkan bahwa kualitas proses dengan model pembelajaran LC 5E menggunakan real laboratory dan virtual laboratory terlaksana dengan baik, serta penilaian afektif dan psikomotorik peserta didik mencapai ketuntasan sebesar 100%. Kata kunci: kualitas proses, real laboratory, virtual laboratory

Analisis Dampak Kesalahan Konsep Laju Reaksi Terhadap Kesalahan Konsep Kesetimbangan Pada Siswa SMA

: This study was designed to analyze the misconception of the chemistry subject reaction rate and chemical equilibrium and the effect of the misconceptions on the chemical equilibrium con-cept. The subjects of the research are two homogenous classes from seven science classes which were determined using random sampling technique. The research instruments were multiple choice test with four answers as well as an interview. The result showed that misconception occurred in all concepts discussed in this research and the impact of the misconception on chemical equilibrium concept occured in reaction rate concept and effect of increasing concentration of the reaction rate and chemical equilibrium

PERBEDAAN HASIL BELAJAR SISWA YANG DIBELAJARKAN MENGGUNAKAN MODEL PEMBELAJARAN LC 5E-STAD DAN MODEL LC 5E-TPS

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar siswa yang dibelajarkan menggunakan model pembelajaran LC 5E-STAD dengan model pembelajaran LC 5E-TPS pada materi koloid. Rancangan yang akan digunakan dalam penelitian ini adalah rancangan eksperimen semu (Quasy Experimental Design). Penelitian ini melibatkan dua kelas sebagai sampel penelitian. Dua kelas yang digunakan dalam penelitian ini merupakan kelas eksperimen. Satu kelas eksperimen diberi perlakuan berupa model pembelajaran LC 5E-STAD dan satu kelas eksperimen lainnya diberi perlakuan berupa model pembelajaran LC 5E-TPS. Instrumen yang digunakan dalam penelitian meliputi instrumen pembelajaran (Silabus, RPP, handout dan LKS) dan instrumen pengukuran (soal ulangan harian dan lembar observasi pembelajaran). Data yang diperoleh berupa penilaian keterlaksanaan proses pembelajaran, nilai afektif, nilai psikomotorik, nilai kuis dan hasil belajar dari ulangan harian  Rata-rata hasil belajar siswa yang dibelajarkan dengan LC 5E-TPS adalah 81,71, lebih tinggi dari siswa yang dibelajarkan dengan LC 5E-STAD  yaitu sebesar 77,83. Berdasarkan hasil penelitian, maka dapat disimpulkan bahwa hasil belajar siswa pada materi koloid yang dibelajarkan dengan LC 5E-TPS lebih baik dari pada siswa yang dibelajarkan dengan LC 5E-STAD