Copper is one of the toxic metals for health and the environment. In humans, high doses of copper metal can cause vomiting, dizziness, weakness, kidney and liver symptoms, anemia, to coma, and in severe cases, the patient can die. Judging from the dangers, proper waste management is needed to reduce the side effects of these pollutants. A practical and inexpensive technology is an adsorption adsorption technique using an efficient and easily available natural adsorbent, namely tofu dregs. The protein contained in tofu is one of the reasons for using tofu waste as an adsorbent. The absorption of amino acids that form two-charged ions (zwitter ions) is owned by proteins. Toxic metal can be bound to protein as metallotionein. The study consisted of four stages, namely (1) Analysis of initial copper content in silver craft waste; (2) Preparation of tofu waste adsorbent; (3) Characterization of tofu dregs adsorbent; and (4) variation of adsorption contact time. The study used a laboratory-scale experimental method. The adsorbent was contacted with the sample using a magnetic stirrer at various times. Instrument Atomic Absorption Spectrometer was used for the analysis of copper metal content and identification of its functional groups using an infrared spectrometer with the result that tofu waste has functional groups -OH, NH (stretching), CH (aliphatic), C=O, -OH (bending vibrations). , and CO. Copper metal content obtained is 19.5979 ppm. The optimum adsorption time was reached at 120 minutes with an optimum adsorption efficiency of 54.88%.

Soap is a necessity for daily life, such as for bathing, washing, and cleaning other necessities. Normally various kinds of bacteria and fungi can live permanently on the skin, for example, such as thebacteria Staphyloccocus aureus. Antibacterial soap is used as a solution to this bacterial problem. Sumbawa oil is a natural ingredient that has the potential to be antibacterial in body wash. Sumbawa oil contains geraniol and citronellal, flavonoids, polyphenols and also contains saponins and tannins. The research objective was to find out what volume of Sumbawa oil is used to obtain the quality of liquid bath soap which has antibacterial content and meets SNI standards. This research is an experimental research in a laboratory by varying the volume of Sumbawa oil. The parameters measured in this study were the effect of variations in the volume of Sumbawa oil on antibacterial properties and pH of liquid bath soap. The findings in this study that the best antibacterial properties were found in the addition of 15 ml volume of Sumbawa oil with an average inhibition zone of 19.5-22.3 mm and a pH of 5 ml of Sumbawa oil volume with an average pH of 6.1. Based on the above findings, it can be concluded that the addition of Sumbawa oil has an effect on the antibacterial properties and pH of liquid bath soap.

This study aims to identify the addition of bran and onion extract to the quantity of merang mushroom production. This research was carried out at the mushroom house merang Dusun Repok Tunjang Taman Indah Village, Pringgarata District, Lombok center NTB. This research is a descriptive experiment. The study was conducted with treatment and control design. The treatment medium was given fine bran and onion extract while the control added coarse bran rice milling waste. The data obtained are described in the form of graphs and photos. The researchers' findings show that the quality of merang mushroom production in media needs to be 36.03% higher when compared to control media. This is supported by the growth of mycelium, a faster fine head in the treatment medium. The application of bran and onion extract to the growing medium of merang mushrooms has a positive impact on the productivity and quality of merang mushrooms.

Kurikulum 2013 telah diimplementasikan semenjak 2013 akan tetapi sampai saat ini masih ditemukan banyak kendala teknis seperti proses implemntasi, media, alat dan bahan ajar yang masih belum memadai, selain kendala teknis guru-guru juga masih belum sepenuhnya memahmi proses perncangan perangkat pembelajaran salah satunya adalah bahan ajar berupa buku dan lembar kerja peserta didik Kondisi ini juga ditemukan di Mitra Program Kemitraan Masyarakat (PKM) yaitu di SMP Negeri 5 Gerung. Guru-guru IPA belum dapat mengembangkan LkM yang dapat menunjang pembelajaran dengan menerapkan Kurikulum 2013. Adapun tujuan dari PkM ini adalah untuk memberikan pelatihan dan pendampingan bagi guru dalam mengembangkan Lembar Kerja Peserta Didik (LKPD) berbasis ekperimen sebagai penunjang pembelajaran saintifik. Mitra yang terlibat dalam kegitan ini adalah guru-guru IPA SMP Negeri 5 Gerung yang berjumlah 4 orang guru. Solusi yang digunakan untuk menyelesaikan permasalahan yang dihadapi guru mitra yaitu melalui serangkaian kegiatan IST (in service training), OST (on service training). Hasil capaian kegitan PkM adalah;  1) Meningkatnya  kemampuan  guru  IPA  SMP Negeri 5 Gerung dalam merancang dan menyusun bahan ajar berupa LKPD berbasis ekperimen, 2) Tersusunnya bahan ajar berupa LKPD berbasis ekperimen. Workshop on Preparation of Student Worksheets Based on Experiments to Support Scientific Learning  The 2013 curriculum has been implemented since 2013 but until now there are still many technical obstacles such as the implementation process, media, tools and teaching materials that are still inadequate, apart from technical constraints teachers also still do not fully understand the process of designing learning devices, one of which is learning materials. teaching materials in the form of books and worksheets for students. This condition is also found in Community Partnership Program Partners (PKM), namely at SMP Negeri 5 Gerung. Science teachers have not been able to develop LkM that can support learning by applying the 2013 Curriculum. The purpose of this PkM is to provide training and assistance for teachers in developing Student Worksheets (LKPD) based on experiments to support scientific learning. The partners involved in this activity were science teachers at SMP Negeri 5 Gerung, totaling 4 teachers. The solution used to solve the problems faced by partner teachers is through a series of IST (in service training), OST (on service training) activities. The results of PkM activities are; 1) Increasing the ability of science teachers at SMP Negeri 5 Gerung in designing and compiling teaching materials in the form of experiment-based LKPD, 2) The preparation of teaching materials in the form of experiment-based LKPD.

Karakteristik matakuliah kimia organik banyak mengandung konsep abstrak yang berimpilikasi pada rendahnya motivasi, minat belajar mahasiswa, dan dosen pengampu matakuliah seringkali kesulitan dalam menguraikan konsep pada tataran mikroskopis yaitu proses perpindahan elektron dalam sebuah reaksi senyawa organik. Berdasarkan fakta tersebut maka diperlukan suatu pendekatan pembelajaran yang tepat untuk mengajarkan materi mekanisme reaksi organik. Salah satu pendekatan yang efektif untuk diterapkan adalah pendekatan pembelajaran SEA (Simple Explicit Animation). Pembelajaran SEA memiliki media animasi yang mampu memvisualisasikan konsep abstrak yang tidak dapat diamati indera penglihatan secara langsung. Tujuan penelitian ini adalah untuk mengetahui pengaruh pendekatan pembelajaran SEA terhadap kemampuan berpikir logika mahasiswa pada matakuliah kimia organik. Jenis penelitian yang digunakan adalah penelitian eksperimen semu. Adapun desain penelitian yang digunakan adalah posttest only control group design. Dalam rancangan penelitian ini, tehnik pengambilan sampel yang digunakan adalah tehnik purposive sampling, sehingga diperoleh sampel sebanyak dua kelompok yaitu satu kelompok dengan eksperimen dan satu dengan kelompok kontrol. Pada penelitian ini instrumen penelitian yang digunakan adalah tes kemampuan berpikir logika melalui soal essay. Berdasarkan hasil uji coba insrumen, diperoleh validitas soal sebesar 0,80 dengan kategori tingkat validitas tinggi sedangkan reliabelitas soal sebesar 0,86 dengan kategori reliabelitas sangat tinggi. Hasil penelitian yang telah dilakukan dapat disimpulkan bahwa terdapat pengaruh kemampuan berpikir logika mahasiswa yang diajar menggunakan pendekatan SEA dibandingkan pembelajaran konvensional. Skor kemampuan berpikir logika mahasiswa lebih tinggi yang diajar  menggunakan pendekatan SEA dibandingkan pembelajaran konvensional.

The results of observations and interviews on lecturers and students show that students tend to pay less attention when the lecturer explains the material. The interaction is also still impressed one way, only lecturers to students. It shows that students' interest toward organic chemistry learning is still low and considered difficult by them. Students are less directed in constructing their knowledge, resulting in many misconceptions and low student's thinking ability. This happens because the union has not multi-level chemical representation that includes the macroscopic, microscopic and symbolic levels in the learning process undertaken. This research was conducted on chemical education students at IKIP Mataram who took organic chemistry course II. This research was conducted from September to December 2016 consisting of preliminary research, product trial, data processing and preparation of research result report. This study aims to determine the feasibility and effectiveness of teaching materials with inquiry assisted approach Computational Chemistry program in improving students' creative thinking ability. This research uses R & D procedure which includes define, design and develop stage. The result of the research shows that the teaching materials developed meet the valid criteria, and effectiveness in improving the ability of creative thinking this can be seen from the result of the n-gain test which shows the improvement of students' creative thinking ability after learning using inquiry materials of computational media in organic chemistry.

This study animed to obtain the from and feasibility of teaching materialsinteractive multimedia based on virtual laboratory on colloidal systemconcept for SMA. The development model used in this study was 4D namelyDefine, Design,, Development, And Disseminate. But in this study only cameto Development stage. The velopment result was validated by 2 lecturers, 1teacher and 10 students in Ma Nurul Muhsinin. Based on the assessment oftwo lecturers as validatorn got the average (71,3%) with the appropriatecategory, the validation result from the subject teachers got percentage of(77,7%) with appropriate category, and the limited trial result by 10 studentsgot percentage of (80,8%) with decent category. So it can be concluded thatthe feasibility of interactive multimedia based on virtual laboratory oncolloidal system material for SMA/MA/SMK was feasible to use.

Tujuan penelitian ini adalah untuk mengetahui aktivitas antimkroba dari ekstrak daun sirsak terhadap <em>Bacillus subtilis</em> dan <em>Esherichia coli. </em>Ekstrak daun sirsak diperoleh dengan cara ekstraksi menggunakan metode Soxhletasi dengan pelarut n-heksana dan metanol. Subjek dalam penelitian ini adalah ekstrak daun sirsak. Ekstraksi dilakukan dengan metode soxletasi dengan 8 sirkulasi. Identifikasi senyawa antimikroba menggunakan metode cakram/ <em>paper disc</em>. Dari hasil penelitian ekstraksi daun sirsak tersebut membuktikan bahwa ekstrak daun sirsak mempunyai aktivitas antimikroba terhadap<em> Bacillus subtillis </em>dan<em> Eschericia coli.</em>