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PENERAPAN METODE PENUGASAN DAN TANYA JAWAB TERHADAP HASIL BELAJAR MAHASISWA KIMIA PADA KONSEP SIFAT KOLIGATIF LARUTAN
Full text linkMetode mengajar sangat berperan dalam proses belajar mengajar, apapun pendekatan dan model yang digunakandalam mengajar , maka harus didukung oleh metode mengajar. Dalam kegiatan mengajar makin tepat metode yangdigunakan, maka makin efektif dan efesien kegiatan pembelajaran yang pada akhirnya akan menunjang danmengantarkan keberhasilan belajar mengajar yang dilakukan oleh guru atau dosen. Metode dalam mengajar berperansebagai alat untuk menciptakan proses mengajar dan belajar. Telah dilakukan penelitian terhadap penerapan metodepenugasan dan tanya jawab dalam mengajar konsep sifat koligatif larutan. Tujuan dari penelitian adalah untukmengetahui: ada tidaknya perbedaan hasil belajar Mahasiswa pada konsep sifat koligatif larutan yang diajarkandengan metode penugasan dan metode tanya jawab. Dengan penerapan metode tersebut diharapkan dapat diketahuimetode yang mana terjadi peningkatan hasil belajar mahasiswa. Uji t digunakan untuk membandingkan hasil belajarMahasiswa yang diajarkan dengan metode Penugasan dan metode tanya jawab, Hasil analisis data hasil ujianmahasiswa diperoleh thitung sebesar 0,276 dan ttabel pada 0,05 sebesar 2,021, karena thitung lebih kecil dari ttabelmaka Ho diterima dan Ha ditolak sehingga dapat disimpulkan, tidak terdapat perbedaan hasil belajar mahasiswa untukmata kuliah kimia dasar yang diajarkan dengan menggunakan metode penugasan dan metode tanya jawab
THE EFFECT OF PROCESS ORIENTED GUIDED INQUIRY LEARNING (POGIL) MODEL ON SCIENCE PROCESS SKILLS (SPS) AND STUDENTS' COGNITIVE ABILITIES ON THE CONCEPT OF REACTION RATE
Full text linkThis study aims to determine the effect of the Process Oriented Guided Inquiry Learning (POGIL) model on Science Process Skills (SPS), cognitive abilities and the correlation between SPS and students' cognitive abilities on the reaction rate concept. The sample in this study were 35 students of class XI SMA Negeri Seribu Bukit 2016-2017 academic year. The data was collected through observation and test. 20 multiple choice questions (alpha:0.81) were used to collect data of students SPS. While students' cognitive abilities were obtained by pre-test and post-test using 20 multiple choice questions (alpha:0.84). The distributed normally and homogeneously. The hypothesis was tested by using Paired Sample t-Test at a significance level of 0.05. Based on the data analysis and hypothesis testing carried out, there was a significant difference in the effect of the POGIL model on Science Process Skills (SPS), cognitive abilities and significant interactions between SPS and students' cognitive abilities on the material reaction rate, indicated by the value of each probability or sig. 0,000, so it can be concluded that the results of testing the hypothesis reject Ho or accept Ha at the 5 percent alpha level
PENGEMBANGAN BAHAN AJAR MODUL PADA MATERI HIDROKARBON DI SMA NEGERI 11 BANDA ACEH
Full text linkPenelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitif siswa pada materihidrokarbon melalui penggunaan pengembangan bahan ajar modul. Pengembangan modul menggunakan modelHannafin and Peck yang terdiri atas tiga fase, yaitu fase analisis keperluan, desain,serta pengembangan danimplementasi. Penelitian ini menggunakan metode kuantitatif. Sampel diambil secara acak dan terbagi dalam kelaskontrol dan eksperimen. Penelitian dilaksanakan di kelas X SMA Negeri 11 Banda Aceh tahun pelajaran 2012/2013.Pengumpulan data untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitif siswa dilakukanmelalui tes awal dan tes akhir pada kedua kelas, dan untuk mengetahui tanggapan guru dan siswa terhadappenggunaan modul sebagai bahan ajar pada materi hidrokarbon digunakan angket. Pengolahan data dilakukan melaluibeberapa tahapan, diantaranya validitas, reliabilitas, uji tingkat kesukaran dan daya beda untuk instrumen yang akandigunakan dalam penelitian. Selanjutnya, untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitifsiswa dilakukan perhitungan N-gain dari hasil tes awal dan tes akhir siswa. Uji hipotesis menggunakan beberapapengujian, diantaranya uji normalitas, homogenitas, dan uji kesamaan dua rerata. Berdasarkan hasil penelitian dapatdisimpulkan bahwa penggunaan modul hidrokarbon dapat meningkatkan pemahaman konsep dan hasil belajar kognitifsiswa. Di samping itu, guru dan siswa sangat setuju terhadap penggunaan modul tersebut
PENERAPAN PENDEKATAN SAINS TEKNOLOGI MASYARAKAT (STM) PADA MATERI KOLOID DI MAN KUTA BARO ACEH BESAR
Full text linkTelah dilaksanakan penelitian tentang Penerapan Pendekatan Sains Teknologi Masyarakat (STM) pada materi Koloid di MAN Kuta Baro Aceh Besar Tahun Ajaran 2011/2012. Penelitian ini bertujuan untuk mengetahui aktivitas siswa, hasil belajar dan tanggapan siswa terhadap pendekatan STM. Jenis penelitian ini yaitu deskriptif kualitatif dengan subjek penelitian yaitu siswa kelas XI-IA1 yang berjumlah 20 orang. Metode pengumpulan data dilakukan dengan cara observasi, tes tertulis, dan angket. Hasil penelitian menunjukkan bahwa siswa terlibat aktif dalam pembelajaran dimana aktivitas siswa meningkat dari 68,1% pada pertemuan pertama menjadi 77,9% pada pertemuan kedua. Siswa senang belajar materi koloid dengan menggunakan pendekatan STM sehingga hasil belajar siswa tuntas pada dua pertemuan dengan persentase secara klasikal 75% pada tes pertemuan pertama dan 85% tes pertemuan kedua. Persentase siswa yang memberikan tanggapan positif pada penerapan pendekatan STM sebesar 85% sedangkan 15% siswa memberikan tanggapan negatif. Berdasarkan hasil penelitian dapat disimpulkan bahwa aktivitas siswa meningkat, hasil belajar siswa tuntas secara klasikal dan siswa memberi tanggapan positif terhadap penerapan pendekatan STM pada materi koloid
MENINGKATKAN KETERAMPILAN DASAR MENGAJAR KIMIA MELAUI PEMBELAJARAN BERBASIS BOARD GAME (BGBL)
Full text linkThe Course of Basic skills of teaching is provided to train chemistry education students in conducting an efficient and effective learning. These skills include set induction closure lesson skills and explaining skills. In the next globalization of education era, chemistry education students as the future chemistry teachers are expected to have a good skill in teaching in English. In fact, the limitations of their abilities and self-confidence to speak in English cause they did not apply the basic skills of teaching in English properly, especially when they have to explain chemistry concepts with analogies and told the interesting stories related to chemistry. To solve this problem, the design of learning to optimize student opportunities in practicing their speaking skills is the right solution. This learning design is called Board Game-Based Learning (BGBL). BGBL implementation is effective in improving students confidences in demonstrating their set induction closure lesson skills and explaining skills in teaching chemistry in English
ANALISIS KEBUTUHAN PENGEMBANGAN MODEL PEMBELAJARAN KIMIA DIRECT INSTRUCTION BERORIENTASI THINKING INDUCTIVELY UNTUK MENUMBUHKAN LIFE SKILL PESERTA DIDIK
Full text linkThis study aims to analyze the needs of students and teachers in the learning process chemicals to be used for the development of Direct Instruction model of teaching chemistry Thinking inductively oriented to foster students' life skill. This study population is the entire SMA / MA in Yogyakarta. The samples are purposive sampling determined by taking into account the achievement of learning outcomes. The study sample consisted of 2 (two) MA, 7 (seven) SMA, 2 (two) private high school. Data was gathered from observation, interview guidelines and questionnaires. analyzed descriptively and interpretative, equipped crosscheck the data and data sources. conclusions of this study (1) has identified three (3) learning model commonly implemented by teachers in the learning process chemistry, (2) some of the barriers / obstacles in applying the model of learning-oriented thinking inductively, (3) life skills students have developed the maximum
PENGEMBANGAN MODUL KOMPOS TERINTEGRASI KONSEP KIMIA SEBAGAI BAHAN AJAR UNTUK SISWA PROGRAM AGRIBISNIS TANAMAN PERKEBUNAN (ATP) SMKN ACEH TIMUR
Full text linkLearning curriculum in a vocational school combines the adaptive, normative and productive subject group. The adaptive, normative and productive subject groups are expected to be mutually supportive and complementary, in fact the group of subjects did not support each other. The purpose of this study is to develop a learning module for productive subject package (composting techniques) which is integrated by the concept of chemistry as one of the adaptive subjects in vocational school, another purpose of this study is to collect the responses of teachers and students on the module, the module quality assessment by experts, assessment of the portion of chemical concepts that integrated in the module by specialists and module effectivity test. The development of module is using the one of instructional development model in teaching materials development known as ADDIE model (analysis, design, development, implementation, evaluation). The results showed that 92% of teachers responded positively to the module, 85% of students responded positively . While the negative resposes from teacher wes 8% and 15% for student responses. The module quality assessment indicate score 3.36 which the criteria "good" and the expert assessment of chemical concepts are integrated in the module is 70% - 80%. The effectivity of module using student test results indicate the average grades is 92 which criteria "very good". The results suggest that the effectivity of the module is very good for learning
HUBUNGAN KEMAMPUAN BERPIKIR FORMAL PESERTA OLIMPIADE KIMIA DENGAN KEMAMPUAN MENYELESAIKAN SOAL OLIMPIADE KIMIA TINGKAT LOKAL DAN INTERNASIONAL
Full text linkThis research aimed to determine the relationship the relationship formal thinking skills of chemistry olympiad participants with problem solving skills the chemistry olympiad questions. The hypothesis in this research that there is a the relationship formal thinking skills of chemistry olympiad participants with problem solving skills the chemistry olympiad questions. The study population was all students from high school or MAN in Banda Aceh and Aceh Besar district participating in the Olympiad. The Sampling used purposive sampling, is the sample members selected by objective research. This research is a qualitative survey using a quantitative approach. The method used in this study is descriptive. The data was collected using a test instrument. In addition, interviews were also used as supporting data in the study. Processing quantitative data used Spearman rank correlation coefficient, while qualitative in percentage form. The results of the analysis obtained rs value about 0,94. Check the table of values r product moment with df of 14, at a significance level of 5% is obtained r table = 0,532, whereas the significance level of 1% is obtained r = 0,661 table. rs value is greater than the price r table, both at significance level of 5% (0,94 0,532), as well as the significant level of 1% (0,94 0,661). Thus, the alternative hypothesis (Ha) is accepted it means there is a strong positive correlation between the variables X and Y. Therefore, it can be concluded that the ability of formal influence Olympiad participants in solving problems
SYNTHESIS OF 1,4-BENZODIAZEPINE THROUGH PHOTOCHEMICAL REACTION OF 3-PHENYL-3,6-DIHYDRO-[1,2]DIOXINE WITH ETHYLENDIAMINE
Full text linkSynthesis of 1,4-Benzodiazepine via reaction of ethylendiamine with 3-phenyl-1,2-dioxine has been carried out. The first step of this experiment was conversion of triphenyl phosphine to triphenyl metyl phosphine iodide which was then used to form phenyl butadiene from cinnamaldehyde. The synthesis of phenyl dioxine was done via photochemical reaction of phenyl butadiene with oxygen gas in the presence of tetraphenyl posphene. The coupling reaction between phenyl phosphine and ethylendiamine was carried out under atmospheric pressure at room temperature. All steps of these reactions were confirmed using TLC with appropriate eluents and the resulting compounds were purified using column chromatography. In addition, all products structure including phenyl dioxine and 1,4-benzodiazepine were determined using HNMR
PENINGKATAN PEMAHAMAN KONSEP IKATAN KIMIA MELALUI PERBAIKAN BAHAN AJAR
No full textMost of the materials in chemical bond are abstract concepts such as ions, ionic radii and orbital. Concepts are considerably difficult to be studied by students who have not had formal thinking ability. This difficulty may be caused error concept, namely the concept of student understanding is different from the agreement by experts. One source of error is the concept of the textbooks used in the learning process. Inproper emplanation or inadequate chemical bonds in the material in the books or high school chemistry teaching materials can lead to errors in sudent. The remedial concept using materials that have been corrected his mistakes and shortcomings plus can reduce errors that occur in students' concept