Pub Date : 2022-07-24DOI: 10.51544/kimia.v6i1.2976
Aulia Prasetia, Sri Ismulyati, Rizki Damayanti
A research has been carried out with the theme "Implementation of CTL-Based Worksheets on Material Changes to Increase Student Learning Motivation in Package B during the Covid-19 Period at SPNF Banda Aceh City". This study aims to determine the effectiveness of the application of Contextual Teaching and Learning (CTL)-based LKS on material changes used in SPNF SKB Banda Aceh and to determine student responses to the application of Contextual Teaching And Learning (CTL)-based LKS on material changes in SPNF SKB. Banda Aceh City. The benefits of this research are for students, the LKS Module can be used as a learning resource, so that it can increase interest in learning chemistry, and can relate the material to the surrounding environment; For teachers, the LKS Module can be used as teaching materials to assist teachers in creating interesting and interactive learning situations; For schools, this research is expected to contribute to improving the conditions of chemistry learning so that it can create a better quality of education in the future. In this research, the method of observation, test (pre-test and post-test) and questionnaire. The results of this study indicate a positive response as evidenced by the data generated.
{"title":"PENERAPAN LKS BERBASIS CTL PADA PERUBAHAN MATERI UNTUK MENINGKATKAN MOTIVASI BELAJAR SISWA PAKET B DI MASA COVID – 19 PADA SPNF KOTA BANDA ACEH","authors":"Aulia Prasetia, Sri Ismulyati, Rizki Damayanti","doi":"10.51544/kimia.v6i1.2976","DOIUrl":"https://doi.org/10.51544/kimia.v6i1.2976","url":null,"abstract":"A research has been carried out with the theme \"Implementation of CTL-Based Worksheets on Material Changes to Increase Student Learning Motivation in Package B during the Covid-19 Period at SPNF Banda Aceh City\". This study aims to determine the effectiveness of the application of Contextual Teaching and Learning (CTL)-based LKS on material changes used in SPNF SKB Banda Aceh and to determine student responses to the application of Contextual Teaching And Learning (CTL)-based LKS on material changes in SPNF SKB. Banda Aceh City. The benefits of this research are for students, the LKS Module can be used as a learning resource, so that it can increase interest in learning chemistry, and can relate the material to the surrounding environment; For teachers, the LKS Module can be used as teaching materials to assist teachers in creating interesting and interactive learning situations; For schools, this research is expected to contribute to improving the conditions of chemistry learning so that it can create a better quality of education in the future. In this research, the method of observation, test (pre-test and post-test) and questionnaire. The results of this study indicate a positive response as evidenced by the data generated.","PeriodicalId":332205,"journal":{"name":"JURNAL KIMIA SAINTEK DAN PENDIDIKAN","volume":"364 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126700930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-23DOI: 10.51544/kimia.v6i1.2968
P. M. Tambunan
Research has been carried out to determine the LD50 value and observe the toxic effects of Ethanol Extract of Lemongrass Leaves (EEEL) on male mouse using 64 male mouse which were divided into 4 groups. The control group was given 0.5% CMC-Na suspension while the treatment group was given a single dose of EEEL suspension with doses of 1500, 3500, and 7000 mg/kg BW given on the first day. Observations of toxic symptoms, changes in body weight and number of deaths were carried out for a span of 7-14 days. After observation, the surviving mouses were sacrificed for macropathological and histopathological examination of the liver and kidneys. The determination of the LD50 value was calculated based on the Indonesian Pharmacopoeia Method Edition VI, while the statistical data was tested using Quadratic Nonlinear Regression (QNR) with the SPSS computer program. The simplicia characterization showed positive results on triterpenoid, tannin, flavonoid, and saponin tests, and anthraquinone glycosides and negative results on alkaloid and steroid tests. The results showed that there were toxic symptoms starting in the 3500 and 7000 mg/kg BW dose groups. The statistical results of Quadratic Nonlinear Regression (QNR) also showed no significant difference between each group. In addition, there were no color differences in all groups in the results of organ macropathology. However, liver damage was found on organ macropathological examination at doses of 1500, 3500, and 7000 mg/kg BW. Meanwhile, EEEL doses of 3500 and 7000 mg/kg caused glomerular hypertrophy and dilation of several renal tubules. The LD50 result is 4,965.92 mg/kg BW which indicates that EEEL was categorized as moderate toxic.
{"title":"KARAKTERISASI DAN UJI TOKSISITAS AKUT EKSTRAK ETANOL DAUN SERAI (Cymbopogon citratus) DESA BANDAR KHALIPAH TERHADAP MENCIT JANTAN (Mus musculus)","authors":"P. M. Tambunan","doi":"10.51544/kimia.v6i1.2968","DOIUrl":"https://doi.org/10.51544/kimia.v6i1.2968","url":null,"abstract":"Research has been carried out to determine the LD50 value and observe the toxic effects of Ethanol Extract of Lemongrass Leaves (EEEL) on male mouse using 64 male mouse which were divided into 4 groups. The control group was given 0.5% CMC-Na suspension while the treatment group was given a single dose of EEEL suspension with doses of 1500, 3500, and 7000 mg/kg BW given on the first day. Observations of toxic symptoms, changes in body weight and number of deaths were carried out for a span of 7-14 days. After observation, the surviving mouses were sacrificed for macropathological and histopathological examination of the liver and kidneys. The determination of the LD50 value was calculated based on the Indonesian Pharmacopoeia Method Edition VI, while the statistical data was tested using Quadratic Nonlinear Regression (QNR) with the SPSS computer program. The simplicia characterization showed positive results on triterpenoid, tannin, flavonoid, and saponin tests, and anthraquinone glycosides and negative results on alkaloid and steroid tests. The results showed that there were toxic symptoms starting in the 3500 and 7000 mg/kg BW dose groups. The statistical results of Quadratic Nonlinear Regression (QNR) also showed no significant difference between each group. In addition, there were no color differences in all groups in the results of organ macropathology. However, liver damage was found on organ macropathological examination at doses of 1500, 3500, and 7000 mg/kg BW. Meanwhile, EEEL doses of 3500 and 7000 mg/kg caused glomerular hypertrophy and dilation of several renal tubules. The LD50 result is 4,965.92 mg/kg BW which indicates that EEEL was categorized as moderate toxic. \u0000 ","PeriodicalId":332205,"journal":{"name":"JURNAL KIMIA SAINTEK DAN PENDIDIKAN","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127652185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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