Efektivitas LKPD Berbasis Blended Learning Berbantuan Multimedia Interaktif untuk Melatih Visual Spasial Peserta Didik

<p><strong>Abstrak </strong></p><p class="abstrak">Penelitian bertujuan untuk mengetahui keefektifan Lembar Kerja Peserta Didik (LKPD) berbasis <em>blended learning</em> berbantuan multimedia interaktif dalam melatih kemampuan visual spasial peserta didik pada materi Ikatan Kovalen. Metode penelitian menggunakan <em>one group pretest-posttest design</em> dengan melakukan uji coba terbatas pada peserta didik Jurusan Kimia Analisis SMK Negeri 1 Cerme Gresik yang dipilih berdasarkan kemampuan peserta didik dari kemampuan rendah, sedang, dan tinggi sebanyak 15 orang. <em>Pretest</em> dan <em>posttest</em> digunakan sebagai instrumen untuk mengetahui kemampuan visual spasial peserta didik. Data dianalisis secara deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa data <em>pretest</em> dan <em>posttest</em> berdistribusi normal dan hasil rata-rata <em>N-Gain</em> pada kategori tinggi sehingga disimpulkan bahwa LKPD berbasis <em>blended learning</em> berbantuan multimedia interaktif dalam melatih kemampuan visual spasial peserta didik pada materi Ikatan Kovalen efektif sebagai bahan ajar.</p><p class="abstrak"> </p><p><strong><em>Abstract</em></strong></p><p class="abstrak"><em>The research aimed to determine the effectiveness of the Student Worksheet (LKPD) based on blended learning assisted by interactive multimedia in training students' visual-spatial skills in the Covalent Bond material. The research method used a one group pretest-posttest design by conducting a limited trial on students of the Analytical Chemistry Department at SMK Negeri 1 Cerme Gresik who were selected based on the ability of students from low, medium, and high abilities as many as 15 people. Pretest and posttest are used as instruments to determine the visual-spatial ability of students. Data were analyzed descriptively quantitatively. The results showed that the pretest and posttest data were normally distributed with the average N-Gain in the high category, so it can be concluded that the LKPD based on blended learning assisted by interactive multimedia in training students' visual-spatial abilities on the Covalent Bond material is effective as teaching material.</em></p>

Meet the IUPAB Councilor—Hans-Joachim Galla

As one of the twelve Councilors, it is my pleasure to provide a short biographical sketch for the readers of Biophys. Rev. and for the members of the Biophysical Societies. I have been a member of the council in the former election period. Moreover, I served since decades in the German Biophysical Society (DGfB) as board member, secretary, vice president, and president. I hold a diploma degree in chemistry as well as PhD from the University of Göttingen. The experimental work for both qualifications has been performed at the Max Planck Institute for Biophysical Chemistry in Göttingen under the guidance of Erich Sackmann and the late Herman Träuble. When E. Sackmann moved to the University of Ulm, I joined his group as a research assistant performing my independent research on structure and dynamics of biological and artificial membranes and qualified for the “habilitation” thesis in Biophysical Chemistry. I have spent a research year at Stanford University supported by the Deutsche Forschungsgemeinschaft (DFG) and after coming back to Germany, I was appointed as a Heisenberg Fellow by the DFG and became Professor in Biophysical Chemistry in the Chemistry Department of the University of Darmstadt. Since 1990, I spent my career at the Institute for Biochemistry of the University of Muenster as full Professor and Director of the institute. I have trained numerous undergraduate, 150 graduate, and postdoctoral students from chemistry, physics, and also pharmacy as well as biology resulting in more than 350 published papers including reviews and book articles in excellent collaboration with colleagues from different academic disciplines in our university and also internationally, e.g., as a guest professor at the Chemistry Department of the Chinese Academy of Science in Beijing.

Contributions to the Geology of Mt. Ruapehu, New Zealand

<p>During the passage of the lahar, shortly after 10 o'clock on Christmas Eve 1953, a portion of the Whangaehu River rail bridge at Tangiwai was demolished by a raging torrent of mud and boulders which originated from the Crater Lake of Mt. Ruapehu, nearly twenty miles distant. This mudflow, or lahar, damaged the railway bridge piers and the Wellington-Auckland express plunged into the torrent. As a result, one hundred and fifty-one people lost their lives. During tramping and ski-ing trips over the past five years the writer has become well acquainted with the National Park area. Close inspection of the Crater Lake was made on 1 January 1954, and again on 22 January. On the latter date the writer was accompanied by two chemists from the Chemistry Department, Victoria University College, and one from the Dominion Laboratory of the Department of Scientific and Industrial Research, who collected samples of the lake water. On 24 January, the Whangaehu River was followed from the Desert Road to where it emerges from a deep gorge on the lower slopes of Mt. Ruapehu. A number of braided channels were examined on the alluvial fan that extends east from the outlet gorge almost to the Desert Road. On the same day the scene of the disaster at Tangiwai was also inspected</p>

Contributions to the Geology of Mt. Ruapehu, New Zealand

<p>During the passage of the lahar, shortly after 10 o'clock on Christmas Eve 1953, a portion of the Whangaehu River rail bridge at Tangiwai was demolished by a raging torrent of mud and boulders which originated from the Crater Lake of Mt. Ruapehu, nearly twenty miles distant. This mudflow, or lahar, damaged the railway bridge piers and the Wellington-Auckland express plunged into the torrent. As a result, one hundred and fifty-one people lost their lives. During tramping and ski-ing trips over the past five years the writer has become well acquainted with the National Park area. Close inspection of the Crater Lake was made on 1 January 1954, and again on 22 January. On the latter date the writer was accompanied by two chemists from the Chemistry Department, Victoria University College, and one from the Dominion Laboratory of the Department of Scientific and Industrial Research, who collected samples of the lake water. On 24 January, the Whangaehu River was followed from the Desert Road to where it emerges from a deep gorge on the lower slopes of Mt. Ruapehu. A number of braided channels were examined on the alluvial fan that extends east from the outlet gorge almost to the Desert Road. On the same day the scene of the disaster at Tangiwai was also inspected</p>

Energy Audit in Department of Chemistry,St. Francis de Sales College, Seminary hills, Nagpur: A case study

As the electricity charges are increasing day by day &amp; electricity or power is the first &amp; foremost requirement to light up &amp; ventilate any room. Running an institution or even a house with the old technology makes less sense which shall be more so in the coming years.The Chemistry department of St. Francis de Sales College, Seminary hills, Nagpur has been taken up as a case study to impart suggestions for improving electricity consumption pattern &amp; reap benefits in the long run. The changes necessitated shall definitely lead to better progress &amp; shall lead to national development. A case study has been presented here in the location-Department of Chemistry,St. Francis de Sales College, Seminary hills, Nagpur, Old building, A wing, III Floor.

Pengembangan Media Pembelajaran PowerPoint Interaktif Berbasis Inkuiri Terbimbing pada Materi Larutan Elektrolit dan Nonelektrolit Kelas X SMA/MA

Electrolyte and nonelectrolyte solutions are one of the materials in SMA/MA class X chemistry. The materials of electrolyte and nonelectrolyte solutions can be understood well through their macroscopic, submicroscopic, and symbolic representations. This study aims to develop interactive PowerPoint learning media based on guided inquiry on electrolyte and nonelectrolyte solution material for class X SMA/MA which is in accordance with the characteristics of the material and the demands of the 2013 curriculum. (define, design, develop, and disseminate). This research is limited to the develop stage. Testing the validity and practicality of interactive PowerPoint learning media based on guided inquiry on electrolyte and nonelectrolyte solution material using an instrument in the form of a questionnaire. The subjects of the validity test of this interactive PowerPoint learning media were three chemistry department lecturers and two MAN chemistry teachers. The practicality test subjects of this interactive PowerPoint learning media were two MAN 5 chemistry teachers and twenty MAN 5 Mandailing Natal students. The data obtained from the questionnaire were processed using the kappa moment to obtain the k value of each validity and practicality test item. The interactive learning media of electrolyte and nonelectrolyte solutions produced in this study had a validity k value of 0.86 and practicality by teachers and students obtaining k values of 0.895 and 0.89, with very high criteria of validity and practicality. Larutan elektrolit dan nonelektrolit merupakan salah satu materi dalam kimia SMA/MA kelas X. Materi larutan elektrolit dan nonelektrolit dapat dimengerti dengan baik melalui representasi makroskopik, submikroskopik, dan simboliknya. Penelitian ini bertujuan untuk mengembangkan media pembelajaran PowerPoint interaktif berbasis inkuiri terbimbing pada materi larutan elektrolit dan nonelektrolit kelas X SMA/MA yang sesuai dengan karakteristik materi dan tuntutan kurikulum 2013. Penelitian yang dilakukan termasuk jenis penelitian pengembangan (research and development) dengan model 4-D (define, design, develop, dan disseminate). Penelitian ini dibatasi sampai tahap develop. Pengujian validitas dan praktikalitas media pembelajaran PowerPoint interaktif berbasis inkuiri terbimbing pada materi larutan elektrolit dan nonelektrolit menggunakan instrumen berupa angket. Subjek uji validitas media pembelajara PowerPoint interaktif ini adalah tiga orang dosen jurusan kimia dan dua orang guru kimia MAN. Subjek uji praktikalitas media pembelajaran PowerPoint interaktif ini adalah dua orang guru kimia MAN 5 dan dua puluh orang siswa MAN 5 Mandailing Natal. Data yang dihasilakan dari angket diolah memakai momen kappa untuk memperoleh nilai k setiap item uji validitas dan praktikalitas. Media pembelajaran interaktif larutan elektrolit dan nonelektrolit yang dihasilkan pada penelitian ini memiliki nilai k kevalidan 0,86 dan kepraktisan oleh guru dan siswa memperoleh nilai k 0.895 dan 0.89, dengan kriteria kevalidan dan kepraktisan sangat tinggi.

Starting grassroots initiatives to progress equity, diversity, and inclusivity in the Chemistry Department at the University of Alberta

The University of Alberta Working for Inclusivity in Chemistry (UAWIC) group was formed in 2017 to bridge the gap in support for underrepresented groups between youth recruitment initiatives and professional organizations. UAWIC tailors its events and initiatives to the needs of the Department of Chemistry. With the goals of fostering a community amongst department members and retaining a diverse graduate student population, UAWIC has created initiatives addressing equity, diversity and inclusivity issues, professional development, and promoting visibility of diversity within the department. Training students how to overcome systemic barriers and providing platforms to share experiences will help aspiring chemists prepare for future career paths and develop a network of mentors and colleagues.

Pengembangan Modul Hidrolisis Garam Berbasis Guided Discovery Learning Untuk Peserta Didik Kelas XI SMA atau MA

This research aims to develop and reveal the validity category of salt hydrolysis module based on guided discovery learning. The type of this research is a Research and Development (R and D). This research used Plomp model which consists of preliminary research, prototype, and assessment phases stage. This research is limited to the prototype stage that is prototype II. This module was validated by three lecturers from Chemistry Department FMIPA UNP and two chemistry teachers from SMAN 1 2X11 Kayutanam. The results of the validity test showed that the eligibility of module content has a category valid (V=0.87), linguistic component has a validity category moderate (V=0.8), serving component has a category valid (V=0.89), and graphic component has a category valid (V=0.85). It can be concluded that the module developed has a category valid with average V of 0.85.

METABOLISME LIPID PADA DAGING BABI DAN KEMUDHARATANNYA BERDASARKAN PENJELASAN AL-QURAN DAN SAINS

Metabolism plays a role in changing food substances such as glucose, amino acids, and fatty acids into compounds needed for life processes such as energy sources (ATP). Metabolic processes that occur in all body tissues which occur under the same conditions or reaction conditions require physicochemical and chemical requirements that are not much different from each other. Fat is considered by many to be a component of a diet that must be reduced as much as possible. However, this is not beneficial for health because of a certain amount of fat, usually about 30% of the total energy needed to carry out its functions properly in the body. Sources of fat usually there are many from animal sources, one of which contains a lot of pork fat content in it. However, according to Islamic teachings and written in Al-Quran that pork should not be consumed because it is included in illicit food. This paper aims to find out the understanding of fat metabolism, to find out the fat content in the body of pigs, and to know the unlawfulness of pork in Al-Quran. The writing method used is the method of literature, the author gets information through various references from the internet, as well as Al-Quran and commentary books. This paper was made as a reference or guide for readers and also lecturers and students of UIN Sunan Gunung Djati Bandung, especially the chemistry department of the Faculty of Science and Technology in the learning process as a manifestation of Revelation Guiding Science (WMI). In addition, we can practice in life.