Browsing by Author "Rais, Muhammad"
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Item Meningkatkan Hasil Belajar Matematika Dengan Model Pembelajaran Kooperatif Tipe Stad Pada Siswa Kelas Viiib Smp Islam Al-Muhsinin Rimba Melintang(2013-02-12) Rais, MuhammadPurpose of this research is to improve achievement math class VIIIB SMP Islam Al Muhsinin Rimba Melintang through cooperative learning STAD model type, the subject matter straight triangular prism and a triangular pyramid. This research is done in class VIIIB SMP Islam Al Muhsinin Rimba Melintang. Research subject is class VIIIB SMP Islam Al Muhsinin Rimba Melintang, which consists of 20 students all of which are female. Form of research is a class act. Model used in this study is the type of cooperative learning model STAD. Research was conducted in two cycles consisting of first cycle and second cycle of each of the three meetings and the daily tests. Of the results of studies using that using cooperative learning type STAD improve student achievement, it is shown in the number of students who achieve a score of 65 on the basis of 9 students (45%), increase in first cycle 13 students (65%), and increased again in second cycle to 14 students (70%), using a type of cooperative learning can improve achievement STAD class VIIIB Smp Islam Al Muhsinin Rimba Melintang the subject matter straight triangular prism and a triangular pyramid in the second semester of academic year 2011 / 2012.Item PROSPEK USAHA CUCIAN SEPEDA MOTOR DI PANGKALAN KERINCI KABUPATEN PELALAWAN(2013-04-30) Rais, MuhammadThe research was conducted in sub district Pangkalan Kerinci based on the increasing the number of motorcycles, it will provide a potential market opportunities and prospects for business washing motorcycles. The purpose of this study to know about prospects business washing motorcycles, also to know about the business conditions and driving factors the increase and barriers. Population and samples in this study were 40 people business owners of the business washing motorcycles. The technique of collecting data through questionnaire method, the interview method and observation method. Methods of analysis using the feasibility analysis Net Present Velue (NPV), Benefit Cost Ratio (B/C), dan Internal Rate of Return (IRR). The results of this study the business washing motorcycles in sub district Pangkalan Kerinci, has the prospect with increasing number of motorcycles. Constraints of faced by motorcycle washing business is weather and competitors. The climate is change often such as rain. and increased competition then this will make the motorcycle washing business revenue to be down.Item UJI TOKSISITAS EKSTRAK TUMBUHAN PAKU Pyrrosia lanceolata(Elfitra, 2022-07) Rais, Muhammad; Hendra, RudiPyrrosia lanceolata is a Polipodiaceae fern. This fern is found growing attached to the branches of an old tree, the rhizome spreads long, the leaves are round, but some are oval, and the texture is thin and fleshy. This plant is widely used by the community as herbal medicine. However, the toxicity of this plant has not been thoroughly studied. The Brine Shrimp Lethality Test (BSLT) results indicated that the crude extract of n-hexane, ethyl acetate, dichloromethane (DCM), and water was not toxic, with an LC50 value of >1000 ppm