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All Journal Chemistry in Education Bunda Edu-Midwifery Journal (BEMJ) Jurnal Manajemen dan Bisnis BERNAS: Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN SAINS SOSIAL DAN AGAMA Jurnal Manajemen dan Bisnis Jurnal Sosial dan Abdimas Journal Of Human And Education (JAHE) Journal of Educational Sciences Mamangan Social Science Journal MEUSEURAYA : JURNAL PENGABDIAN MASYARAKAT PEDAGOGIC: Indonesian Journal of Science Education and Technology Science: Indonesian Journal of Science
Lastri, Lastri
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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INOVASI BAHAN AJAR REDOKS DENGAN PENDEKATAN MULTIREPRESENTASI DAN CONTEXTUAL TEACHING LEARNING Lastri, Lastri; Kusumo, Ersanghono; Susilaningsih, Endang
Chemistry in Education Vol 7 No 1 (2018): Terbit bulan April 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bahan ajar merupakan salah satu sarana pendukung keberhasilan pembelajaran. Bahan ajar harus memiliki karakteristik tertentu supaya dapat memberikan hasil yang diharapkan. Penelitian ini bertujuan untuk mengetahui kelayakan, kepraktisan dan keefektifan bahan ajar. Penelitian ini merupakan penelitian Research and Development (R&D). Desain penelitian yang digunakan yaitu model pengembangan Sugiyono yang dimodifikasi. Metode pengambilan data yang dilakukan yaitu metode wawancara, angket, tes dan dokumentasi. Data hasil penelitian dianalisis menggunakan metode deskriptif kuantitatif. Hasil validasi kelayakan isi, penyajian, bahasa, kegrafisan dan kepraktisan berturut-turut mendapat rerata skor 17.8/20, 25.2/28, 35.6/40, 17.3/20 dan 18.7/20. Kepraktisan bahan ajar juga ditinjau dari angket tanggapan siswa. Bahan ajar yang dikembangkan memberikan tanggapan positif dengan 8 siswa memberikan tanggapan sangat baik dan 28 siswa memberikan tanggapan baik. Keefektifan bahan ajar ditinjau dari ketuntasan klasikal siswa. Ketuntasan klasikal siswa yaitu sebanyak 28 siswa tuntas dari 36 siswa atau sebesar 77.78%. Bahan ajar yang dikembangkan layak, praktis dan efektif. Kata Kunci: Bahan Ajar; contextual teaching learning; Multirepresentasi
Studi Komparasi Hasil Belajar Siswa antara LKS Kharisma dengan LKS PAIKEM pada Materi Sistem Peredaran Darah Manusia Buton, Wa Diati; Pary, Cornelia; Kamsurya, M Yani; Kamsurya, Rizal; Lastri, Lastri
PEDAGOGIC: Indonesian Journal of Science Education and Technology Vol. 2 No. 1 (2022): PEDAGOGIC: Indonesian Journal of Science Education and Technology
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/ijset.v2i1.57

Abstract

Student learning outcomes should be the main focal point in learning. Good learning outcomes show the level of students' understanding of the teaching material, as well as the success of teachers in carrying out learning in the classroom. The study aims to determine the differences in student learning outcomes taught using LKS Kharisma and LKS PAIKEM on the material of the human circulatory system. The type of research used is quantitative, namely a comparative study or comparative study with a total sample of 38 people. The sample was selected using the cluster random sampling technique. The instruments used are tests and observations. Tests are carried out to determine student learning outcomes and observation is used to objectively determine learning conditions. The data analysis technique used is to use the t-test. The results of the analysis showed that there were differences in student learning outcomes taught using LKS Kharisma and LKS PAIKEM on the material of the human circulatory system. The average score of students who studied using LKS PAIKEM was 73.84 and students who studied with LKS Kharisma obtained an average score of 64.74
Peningkatan Hasil Belajar Biologi Melalui Penerapan Model Pembelajaran Kooperatif Tipe Student Teams Achievement Divisions Irawani, Fifi; Lastri, Lastri; Kamsurya, Rizal
PEDAGOGIC: Indonesian Journal of Science Education and Technology Vol. 3 No. 2 (2023): PEDAGOGIC: Indonesian Journal of Science Education and Technology
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/ijset.v3i2.403

Abstract

This study aims to determine the improvement of biology learning outcomes through the application of the Student Teams Achievement Divisions (STAD) type cooperative learning model to grade VIII students of SMP Negeri 4 Salahutu. The type of research used is Classroom Action Research which consists of four stages, namely planning, implementation, observation, and reflection. The subjects of this study numbered 34. The instruments used are observation sheets, learning outcome tests, and documentation. Based on the results of data analysis, it was found that the application of the STAD type cooperative learning model can improve student learning outcomes in grade VIII SMP Negeri 4 Salahutu. These results are intended by increasing the results of the initial test, cycle I, and cycle II tests. This is shown from the results obtained by students who have achieved the Minimum Completeness Criteria individually, namely 67 and classically the completeness of student learning reaches 75% of students who are complete. In the initial test, the percentage of student learning completeness only reached 26.47% and increased in the first cycle test to 64.71%, and again increased in the end of the second cycle test to 94.12%. While the average score obtained classically also increased, namely in the initial test the average value obtained was 52.65, there was an increase in cycle I to 69.12 and increased significantly in cycle II to 83.24.
Kerja Nyata Untuk Kemajuan : Pendampingan Pendidikan Sebagai Wujud Pengabdian Mahasiswa Di SD Negeri 094096 Desa Nagori Bayu Gea, Putri Angeline; Lastri, Lastri; Laoli, Jernih Rita; Hutauruk, Santa Adelima; Manulang, Rolince
Jurnal Sosial & Abdimas Vol 6 No 2 (2024): Jurnal Sosial & Abdimas
Publisher : LPPM Universitas Adhirajasa Reswara Sanjaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51977/jsa.v6i2.1652

Abstract

Kuliah Praktek Pengabdian Mahasiswa (KPPM) merupakan Salah Satu Tri Dharma Perguruan Tinggi yaitu pengabdian kepada masyarakat yang dilakukan oleh mahasiswa. Program pengabdian ini dilaksanakan melalui pendampingan kepada masyarakat desa Nagori Bayu yang berada di Kecamatan Dolok Pardamean, Kabupaten Simalungun, Provinsi Sumatera Utara. Tujuan pengabdian ini untuk membantu dan memberdayakan masyarakat tentang pentingnya pendidikan dalam meningkatkan pembangunan kualitas hidup manusia untuk mencapai kecerdasan bangsa. Metode penelitian yang digunakan adalah metode deskriptif kualitatif, dengan memanfaatkan data primer dan literatur. Hasil penelitian menunjukkan bahwa masyarakat Desa Nagori Bayu sangat mendukung adanya pendampingan pendidikan yang dilakukan oleh peserta Kuliah Praktek Pengabdian Mahasiswa Universitas HKBP Nommensen guna meningkatkan kualitas pendidikan.
Perbedaan Efektivitas Air Rebusan Jahe Dan Lemon Terhadap Frekuensi Mual Muntah Pada Ibu Hamil Trimester I Di Wiilayah Kerja Puskesmas Kelurahan Tembilahan Kota Lastri, Lastri; Yuliani, Istri; Kasjono, Heru Subaris
Bunda Edu-Midwifery Journal (BEMJ) Vol. 6 No. 2 (2023): September 2023
Publisher : Akademi Kebidanan Bunga Husada Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54100/bemj.v6i2.135

Abstract

Background: Nausea vomiting is a physiological thing that often occurs in pregnant women in the first trimester. If left untreated it can cause excessive vomiting and nausea which can cause malnutrition, maternal weight loss, miscarriage, low birth weight, and premature birth. One way to deal with nausea and vomiting with non-pharmacology is ginger and lemon boiled water. Objective: To determine the difference in the effectiveness of ginger and lemon boiled water on the frequency of nausea and vomiting in first-trimester pregnant women. Method: This research design is quantitative with the quasi-experimental method, research design using two groups of pretest-posttest design. The sample number was 30 respondents with a purposive sampling technique. The instrument used an observation sheet measuring nausea vomiting (PUQE)-24.Statistical analysis using the Wilcoxon, Mann Whitney test. Results: Ginger boiled water is effective against the frequency of nausea and vomiting with a value of 0.000 (p<0.05), and lemon water with a value of 0.025 (p less than 0.05), and there is a difference in the effectiveness of ginger and lemon cooking water with a value of 0.048 (p less than 0.05). Conclusion: There are differences in the effectiveness of ginger and lemon cooking water. Ginger-boiled water is more effective against the frequency of nausea and vomiting in pregnant women in the first trimester than lemon water.
PRICE FLUCTUATIONS AND ELASTICITY OF COFFEE PRICE TRANSMISSION IN THE WORLD AND DOMESTIC COFFEE MARKETS OF NORTH SUMATRA PROVINCE Sihotang, Jusmer; Purba, Martin Luter; Nopeline, Nancy; Lastri, Lastri
Jurnal Pendidikan, Sains Sosial, dan Agama Vol. 10 No. 2 (2024): Jurnal Pendidikan, Sains Sosial, dan Agama
Publisher : STABN RADEN WIJAYA WONOGIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53565/pssa.v10i2.1538

Abstract

The research aims to analyze fluctuation Coffee prices in North Sumatra Province and districts selected ( Taput, Simalungun, Karo, and Dairi ), analyzing elasticity of coffee price transmission from the world coffee market to the coffee market in Sumatra Province, and analyzing elasticity of coffee price transmission between the North Sumatra Province market and Taput, Simalungun, Karo, and Dairi Regencies. Research data is secondary data series time 2012-2023, with tool analysis coefficient of variation and elasticity transmission price.Research findings show that coffee prices in North Sumatra Province and West Sumatra Regency Taput, Simalungun, Karo, and Dairi are very volatile and include in category fluctuation high price.The elasticity of coffee price transmission between the world market and the North Sumatra Province market is inelastic. Changes the price of arabica and robusta coffee on the world market is only cause change very small coffee prices in North Sumatra Province. This show market system yet efficient that can happen Because adjustment costs in the supply chain or the abuse of market power in oligopsony market structures by exporters or traders in the world market.The elasticity of Arabica coffee price transmission in Taput and Karo Districts is elastic, where the percentage change Arabica coffee prices in both regency the more big compared to with percentage change coffee prices in North Sumatra Province. This show existence market structure that is oligopoly, so that coffee producers in both regency be in position strong bargaining position in determine price. However, the elasticity of the transmission of Arabica and Robusta coffee prices in the Regency Simalungun and Robusta coffee in the Regency nature inelastic, where percentage change prices on both regency more small than percentage change coffee prices in North Sumatra Province. This show existence market structure that is monopsony in both regency so that can cause market abuse occurs power by intermediary traders in controlling prices in Simalungun Regency and Dairi Regency.
Analysis of Factors that Influence Student Learning Achievement Lastri, Lastri; Kartikowati, Sri; Sumarno, Sumarno
Journal of Educational Sciences Vol 4. No. 3. July 2020
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.4.3.p.679-693

Abstract

This study aims to analyze the factors that affect student achievement in the Department of Economic Education at the Faculty of Tarbiyah and Teacher Training of UIN Suska Riau. Population of this study was 201 students with a sample of 100 people. Data collected using questionnaire and documentation instrument. The data analysis technique used multiple regression analysis. The results showed that learning motivation has a positive and significant effect on learning achievement. The learning interest has a positive and significant effect on learning achievement. The family environment has a positive and significant effect on learning achievement, and teh learning motivation has also a positive and significant effect on learning achievement. There is a joint influence of learning motivation, interest in learning, family environment and learning models, together on learning achievement.
Analysis Of The Impact Of Macroeconomic Policies On Economic Growth In Indonesia (2010-2022) Lastri, Lastri; Purba, Elvis F; Sihotang, Jusmer; Gea, Putri Angeline
Jurnal Ilmu Sosial Mamangan Vol 12, No 3 (2025): Jurnal Ilmu Sosial Mamangan Accredited 2 (SK Dirjen Ristek Dikti No. 0173/C3/DT
Publisher : LPPM Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/mamangan.v12i03.7894

Abstract

Economic growth is a difficult problem for every country to overcome. The government can use macroeconomic policies, namely monetary policy and fiscal policy, to increase economic growth. The monetary policy instruments used in this research are JUB, BI rate, inflation and exchange rate, while fiscal policy is in the form of taxes and government spending. By using the VAR method, JUB and the exchange rate have a significant influence on economic growth and in the long term increasing JUB and stabilizing the exchange rate can increase economic growth while high inflation and BI rates can reduce economic growth. When the economy is sluggish, the government can increase the JUB by reducing the Minimum Statutory Reserve and carrying out open market operations, limiting imports and increasing exports so that the rupiah exchange rate against the dollar can appreciate so that inflation can be suppressed, then lowering the interest rate on savings and loans so that people can running MSMEs or macro businesses. In the long term, fiscal policy in increasing tax revenues from the formal sector and increasing government spending in infrastructure development, education and health can increase economic growth.
Analysis Of The Influence Of Production, Price, Land Area And Exchange Rates On Indonesian Tobacco Exports Lastri, Lastri; Purba, Elvis F; Sihotang, Jusmer; Laoli, Clear Rita
Jurnal Ilmu Sosial Mamangan Vol 12, No 3 (2024): Jurnal Ilmu Sosial Mamangan Accredited 3 (SK Dirjen Ristek Dikti No. 158/E/KPT/
Publisher : LPPM Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/mamangan.v12i3.5450

Abstract

Indonesia's tobacco exports are currently experiencing a setback. For this reason, this research uses the ARDL (Autoregressive Distributed Lag) model with variables of production, land area, international prices and exchange rates which influence Indonesian Tobacco Exports both in the short and long term. For the short term, the ARDL model forecasting variables for production, land area, international prices and exchange rates have a significant effect on Indonesian tobacco exports, while for the long term the variables of international prices and exchange rates have a significant effect on Indonesian tobacco exports.
Analysis Of The Influence Of Economic Growth, Open Unemployment Rate, And The Percentage Of Poor Population Towards HDI North Sumatera City Regency, 2010 - 2022 Purba, Elvis Fresly; Nopeline, Nancy; Lastri, Lastri; Gea, Putri Anjelina Anjelina
Jurnal Ilmu Sosial Mamangan Vol 12, No 3 (2025): Jurnal Ilmu Sosial Mamangan Accredited 2 (SK Dirjen Ristek Dikti No. 0173/C3/DT
Publisher : LPPM Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/mamangan.v12i3.6898

Abstract

One of the indicators of the success of the development of a country, province, district or city is the human development index (HDI), because it can describe the success of building the quality of human life. This index is not only useful for determining the development ranking but is also strategic data to measure government performance and is also one of the allocators for determining the General Allocation Fund (DAU) from the central government to the regions. The purpose of this study was to determine the effect of economic growth, open unemployment rate, and percentage of poor population on the HDI of regencies/cities in North Sumatra Province. The data analyzed were panel data which were a combination of cross-section data (25 regencies and 8 cities) and time series ( 2010-2022 ) obtained from the publication of the Central Statistics Agency (BPS) of North Sumatra Province. The data were analyzed using Eviews version 12.0. Based on the data analysis, the best panel data regression model was the Fixed Effect Model (FEM). Based on the partial test (t-test), the open unemployment rate and percentage of poor population had a negative and significant effect on the HDI and were in accordance with theoretical expectations. On the other hand, the effect of economic growth was not in accordance with theoretical expectations because its effect was negative and significant on the HDI. This shows that economic growth is not necessarily a panacea for overcoming the problems of unemployment and poverty. In other words, increasing economic growth cannot automatically increase the purchasing power of the population of regencies/cities in North Sumatra Province. Furthermore, the simultaneous test showed that the three independent variables had a significant effect on the HDI. The coefficient of determination of the panel data regression model is 88.89 percent, which means that there are still other independent variables that can explain the variation in HDI, although only 11.11 percent.
Co-Authors Adinata, Yuni Agustina, ria Aidil, Aidil APRIYANI, SARI Bella, Claudya Chintya Buton, Wa Diati Carolina Carolina, Carolina Damayanti, Desty Danil Zulhendra Elvis Fresly Purba Endang Susilaningsih erna wati Ersanghono Kusumo, Ersanghono Farhan, M. Anuar Fitriani, Nadilla Wahyuni Gea, Putri Angeline Gea, Putri Anjelina Anjelina Habibillah, Asri Qurrata Aini Haliza, Umi Hardi Hardi, Hardi Heru Subaris Kasjono, Heru Subaris Hidayah, Hidayah Hutauruk, Santa Adelima Irawani, Fifi Juwita, Joy Kamsurya, Rizal Kasman, Adi Kondios Meidarlin Pasaribu Laoli, Clear Rita Laoli, Jernih Rita M Yani Kamsurya Mahendra, Ihza Manulang, Rolince Marlina, Euis Marpaung, Rince Marziah, Ainal Natasya, Azura Naurah, Gita Athira Nopeline, Nancy Pary, Cornelia Purba, Elvis F Purba, Martin Luter Rajagukguk, Rosdiana Rani Farida Sinaga Riparta, Fikri Risky, Miftahul Sahat Taruli Siahaan Samaliah, Nur Saragih, Renita Sari, Nova Yunita Sauduran, Golda Novatrasio SH, Hendra Sharfina, Nur Nazhira Sihotang, Jusmer Siregar, Tesa EV Sri Kartikowati Sumarno . Tongam Sihol Nababan, Tongam Sihol Yuliani, Istri Zalukhu, Niska Devita Zulfa, Siti Zakiah