Media EksaktaPub Date : 2020-11-30DOI: 10.22487/me.v16i2.743
Rika Rahayu, Paulus Hengky Abram
{"title":"ANALISIS JENIS DAN KANDUNGAN LOGAM PADA BATUAN BUANGAN DARI PERTAMBANGAN EMAS POBOYA","authors":"Rika Rahayu, Paulus Hengky Abram","doi":"10.22487/me.v16i2.743","DOIUrl":"https://doi.org/10.22487/me.v16i2.743","url":null,"abstract":"Metals has an important role for human life, especially in the industrial field. The purpose of this research is to find out the metal type and content in waste rock from the Poboya gold mine. The sampling technique is done by grabbing sampling, which is to take a lump of rock at a mining site. The analytical method used to determine the content and percentage of elements in rocks is XRF (X-Ray Fluorescence) spectrophotometry. The analysis results show that the metals contained in the waste rock from Poboya gold mining are Silicon (Si), Iron (Fe), Potassium (K), Aluminium (Al), Calcium (Ca), Titanium (Ti), Arsenic (As), Zirconium (Zr), Manganese (Mn), Strontium (Sr), Barium (Ba), Rubidium (Rb), Zinc (Zn), Niobium (Nb), Indium (In), Tin (Sn) and Stibium/Antimony (Sb). The highest percentage metals are Silicon 52.98% and Iron 23.56%. Based on these results, the high content of silica oxide and iron oxide in waste rock from Poboya has the potential as a basis to be used for making nano materials, especially nano silica and ferromagnetic materials.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123100341","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}
Media EksaktaPub Date : 2020-11-30DOI: 10.22487/me.v16i2.738
Nur Utami Amaliah, Sahrul Saehana, I. Darmadi
{"title":"ANALISIS PEMAHAMAN KONSEP GERAK PADA SISWA YANG DIAJAR DENGAN MEDIA VIDEO BERBANTUAN SOFTWARE TRACKER","authors":"Nur Utami Amaliah, Sahrul Saehana, I. Darmadi","doi":"10.22487/me.v16i2.738","DOIUrl":"https://doi.org/10.22487/me.v16i2.738","url":null,"abstract":"Tujuan penelitian ini yaitu untuk mengetahui dan menganalisis pemahaman konsep gerak pada siswa yang diajar dengan media video berbantuan Software Tracker. Penelitian ini merupakan penelitian deskriptif kualitatif. Subjek penelitian merupakan siswa kelas X SMA Negeri 5 Palu semester II tahun ajaran 2017/2018. Responden dipilih berdasarkan subjek dalam kategori tinggi, sedang, dan rendah yang bersedia melakukan tes wawancara. Instrumen penelitian yang digunakan berupa tes pilihan ganda beralasan disertai Certain of Rensponse Index (CRI) yang diberikan sebelum dan setelah menggunakan media video berbantuan Software Tracker. Hasil penelitian menunjukkan bahwa pemahaman konsep gerak siswa pada tes awal dapat dikategorikan rendah. Pemahaman konsep gerak siswa setelah penggunaan media video berbantuan Software Tracker meningkat dan dapat dikategorikan sedang.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126330015","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}
Media EksaktaPub Date : 2020-11-30DOI: 10.22487/me.v16i2.739
G. Arini, Sitti Aminah
{"title":"PEMANFAATAN SERBUK GERGAJI KAYU JATI (TECTONA GRANDIS L.F) SEBAGAI ADSORBEN LOGAM CU (II)","authors":"G. Arini, Sitti Aminah","doi":"10.22487/me.v16i2.739","DOIUrl":"https://doi.org/10.22487/me.v16i2.739","url":null,"abstract":"Sawdust is one of the industrial wastes that can be used as an absorbent. The chemical content in sawdust is the same as in its wood, i.e lignin, cellulose, and hemicellulose. This study aimed to determine the optimum contact time, optimum weight, and adsorption capacity of Cu (II) ions by teak sawdust using the atomic absorption spectrophotometry (AAS). Determination of optimum contact time was carried out with time variations of 10, 30 and 60 minutes, the optimum weight with various weight of 0.5, 1, and 1.5 grams, and the adsorption capacity of teak sawdust in various concentrations of 50, 100, 150 and 200 ppm. The results showed that the equilibrium contact time was reached at 30 minutes, and the percentage of adsorption of Cu (II) was 91.25%. The optimum weight for metal adsorption was 1.5 gram, and the adsorption percentage of adsorbed Cu (II) ions was 96.18%. The adsorption capacity was determined from the adsorption isotherm according to the Langmuir and the freundlich models. The adsorption isotherm model of Cu (II) of teak sawdust follows the Langmuir isotherm model with a maximum adsorption capacity (qmax) of 2.058 mg/g.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126042398","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}
Media EksaktaPub Date : 2020-11-30DOI: 10.22487/me.v16i2.737
Riska Riska, Syamsu Syamsu, M. Pasaribu
{"title":"PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE STAD BERBANTUAN MEDIA AUDIO VISUAL TERHADAP HASIL BELAJAR FISIKA SISWA KELAS XI SMA NEGERI 1 TIKKE RAYA","authors":"Riska Riska, Syamsu Syamsu, M. Pasaribu","doi":"10.22487/me.v16i2.737","DOIUrl":"https://doi.org/10.22487/me.v16i2.737","url":null,"abstract":"Tujuan penelitian adalah untuk mengetahui ada tidaknya pengaruh model pembelajaran kooperatif tipe STAD berbantuan media audio visual terhadap hasil belajar fisika siswa kelas XI di SMAN 1 Tikke Raya. Jenis penelitian ini merupakan eksperimen kuasi dengan equivalent pretest-posttest design. Populasi penelitian ini adalah seluruh siswa kelas XI SMA Negeri 1 Tikke Raya. Teknik Sampling yang digunakan dalam penelitian ini adalah Proposive Sampling dengan sampel penelitian adalah kelas XI IPA 1 sebagai kelompok kontrol dan kelas XI IPA 2 sebagai kelompok eksperimen. Instrumen hasil belajar fisika berupa tes pilihan ganda yang telah divalidasi melalui validitas kontruksi. Tes hasil belajar fisika yang diperoleh menunjukkan bahwa skor rata-rata kelompok eksperimen 17,93 dengan standar deviasi 2,81 dan skor rata-rata kelompok kontrol 16,76 dengan standar deviasi 2,57. Dari hasil analisa data tes akhir diperoleh nilai ttable untuk n=35 pada taraf nyata α = 0,05 dan dk = 68 adalah 1,67 dan nilai thitung adalah 1,82. Hal ini berarti bahwa nilai berada diluar daerah penerimaan Hasil ini menyatakan terdapat perbedaan hasil belajar kelas yang diterapkan model pembelajaran kooperatif tipe STAD berbantuan media audio visual dengan kelas yang diterapkan model pembelajaran langsung. Dengan demikian dapat disimpulkan bahwa terdapat pengaruh model pembelajaran kooperatif tipe STAD berbantuan media audio visual terhadap hasil belajar fisika siswa kelas XI SMAN 1 Tikke Raya.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123628110","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}
Media EksaktaPub Date : 2020-11-30DOI: 10.22487/me.v16i2.740
Pratiwi Nova Sari, Sitti Aminah
{"title":"PEMANFAATAN SERBUK GERGAJI SEBAGAI BAHAN BAKU BRIKET","authors":"Pratiwi Nova Sari, Sitti Aminah","doi":"10.22487/me.v16i2.740","DOIUrl":"https://doi.org/10.22487/me.v16i2.740","url":null,"abstract":"Wood sawdust is one of the wastes from wood processing industry such as sawdust and peel residues. They are cheap raw materials and potential as a source of alternative energy by processing it into charcoal briquettes. The use of charcoal briquettes as a substitute for fossil energy sources has several advantages including the relatively less smoke emitted because it has been released during the carbonization process. They can be stored for a long time and the calor value is higher than wood. Charcoal briquettes are made from wood sawdust which is added by tapioca flour as glue. This study was conducted in two main stages, processing charcoal briquette and characterization. The characterization of charcoal briquettes are including density, moisture, ash, volatile substances levels, carbon bound, long flame and calor value. The results obtained from the charcoal briquettes are a density of 0.384 gr/cm3, a moisture of 2.44%, an ash of 4.82%, a volatile substance of 19.13%, a carbon bond of 74.44%, a briquette flame of 6.75 minutes/gr and the calor value of 5127 cal/gr. This study concluded that wood sawdust briquette has the potential to be used potentially as substitued for fuel.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122852502","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}
Media EksaktaPub Date : 2020-11-30DOI: 10.22487/me.v16i2.742
Winarsyih Muhidin, Tahril Tahril
{"title":"PEMANFAATAN MINYAK DAUN CENGKEH (SYZYGIUM AROMATCUM L.) UNTUK PENGAWETAN IKAN","authors":"Winarsyih Muhidin, Tahril Tahril","doi":"10.22487/me.v16i2.742","DOIUrl":"https://doi.org/10.22487/me.v16i2.742","url":null,"abstract":"This study aimed to examine the effect of clove leaf oil on the preservation of skipjack tuna fish. This research was conducted with variations in concentration and duration of storage. Analysis of the number of microbes was determined using the Pour method (pour plate), the organoleptic analysis used a test of the level of preference for color, aroma, texture, and taste. Analysis of protein levels used a Uv- Vis spectrophotometer and analysis of fat content used the Soxletation method.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130383788","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}
Media EksaktaPub Date : 2020-05-31DOI: 10.22487/me.v16i1.730
Dewi Purnama Sari, Yusuf Kendek, Syamsu Syamsu
{"title":"PENGARUH MODEL KOOPERATIF TIPE TALKING STICK DISERTAI METODE EKSPERIMEN TERHADAP HASIL BELAJAR FISIKA PADA PESERTA DIDIK KELAS XI SMA NEGERI 5 PALU","authors":"Dewi Purnama Sari, Yusuf Kendek, Syamsu Syamsu","doi":"10.22487/me.v16i1.730","DOIUrl":"https://doi.org/10.22487/me.v16i1.730","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui ada tidaknya pengaruh model pembelajaran kooperatif tipe talking stick disertai metode eksperimen terhadap hasil belajar fisika pada peserta didik kelas XI SMA Negeri 5 Palu. Jenis penelitian ini merupakan eksperimen kuasi dengan desain posttest-only control group design. Teknik sampling yang digunakan dalam penelitian ini adalah proposive sampling dengan sampel penelitian adalah kelas XI MIPA 4 sebagai kelompok eksperimen (n=29) dan kelas XI MIPA 3 sebagai kelompok kontrol (n=30). Pada kelas eksperimen diberi perlakuan dengan menggunakkan model pembelajaran kooperatif tipe Talking Stick dan kelas kontrol menggunakan model pembelajaran Direct Instruction, dimana kedua kelas menggunakan metode eksperimen. Setelah pembelajaran selesai, kedua kelas diberikan tes akhir untuk menguji hasilnya. Berdasarkan hasil dari kedua kelas, dari analisa data diperoleh bahwa skor rata-rata kelompok eksperimen 14,81 dan skor rata-rata kelompok kontrol yaitu 9,03. Berdasarkan hasil uji hipotesis, diperoleh dan pada taraf nyata . Hal ini menunjukan bahwa terdapat pengaruh model pembelajaran kooperatif tipe taling stick disertai metode eksperimen terhadap hasil belajar fisika pada peserta didik kelas XI SMA Negeri 5 Palu.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124901163","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}
Media EksaktaPub Date : 2020-05-31DOI: 10.22487/me.v16i1.725
N. Putri, Supriyatman Supriyatman, Sahrul Saehana
{"title":"ANALISIS MISKONSEPSI SISWA PADA MATERI GERAK LURUS","authors":"N. Putri, Supriyatman Supriyatman, Sahrul Saehana","doi":"10.22487/me.v16i1.725","DOIUrl":"https://doi.org/10.22487/me.v16i1.725","url":null,"abstract":"Penelitian ini menggunakan pendekatan deksriptif kualitatif yang bertujuan untuk mengetahui miskonsepsi siswa kelas XI IPA 3 di SMA Negeri 5 Palu tentang gerak lurus. Penelitian ini dilakukan di SMA Negeri 5 Palu. Subyek penelitian adalah siswa XI IPA 3 yang terdiri dari 30 siswa. Instrumen yang di gunakan adalah tes pilihan ganda beralasan yang disertai dengan tingkat keyakinan dalam menjawab soal (Three-tier diagnostic test) berjumlah 18 butir soal. Hasil penelitian menunjukan bahwa tingkat miskonsepsi siswa dengan menggunakan Three-tier diagnostic test tergolong tinggi dengan rata-rata persentase 52,78% bila dibandingkan dengan jumlah rata-rata siswa yang tidak paham konsep yang mencapai 37,04% dan jumlah rata-rata siswa yang paham konsep mencapai 10,18%. Miskonsepsi disebabkan karena jawaban sudah sesuai dengan konsep ilmiah namun responden tidak yakin dengan jawaban dan ada beberapa responden hanya menerka jawaban serta tidak yakin dengan jawaban. Miskonsepsi dominan pada konsep tentang kecepatan lebih besar dan kecepatan paling besar.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125785862","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}
Media EksaktaPub Date : 2020-05-31DOI: 10.22487/me.v16i1.727
Nursyamsi Nursyamsi, M. Muslimin, Amiruddin Hatibe
{"title":"PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE SFAE BERBANTUAN KOMIK EDUKATIF TERHADAP PEMAHAMAN KONSEP FISIKA SISWA KELAS X SMA NEGERI 1 PALU","authors":"Nursyamsi Nursyamsi, M. Muslimin, Amiruddin Hatibe","doi":"10.22487/me.v16i1.727","DOIUrl":"https://doi.org/10.22487/me.v16i1.727","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui ada tidaknya pengaruh model pembelajaran kooperatif tipe Student Facilitator and Explaining (SFAE) berbantuan komik edukatif terhadap pemahaman konsep fisika siswa kelas X SMA Negeri 1 Palu. Jenis penelitian ini adalah eksperimen kuasi yang menggunakan desain penelitian the equivalent pretest-postest design. Penelitian ini menggunakan sampel pada kelas X IPA 2 sebagai kelas eksperimen dan kelas X IPA 1 sebagai kelas kontrol, dengan sampel pada masing-masing kelas berjumlah 32 dan 30 siswa. Instrumen penelitian berupa tes pemahaman konsep berbentuk tes pilihan ganda beralasan berjumlah 20 soal. Berdasarkan tes pemahaman konsep yang diperoleh menunjukkan bahwa nilai posttest lebih tinggi daripada nilai pretest. Adapun skor tertinggi posttest yaitu 37 dan skor tertinggi pretest yaitu 31. Uji peningkatan hasil tes diperoleh nilai rata-rata N-gain yaitu 55,28% dengan kriteria sedang. Hasil perhitungan dari uji hipotesis (uji-t) diperoleh thitung sebesar 4,04 dan ttabel pada taraf nyata α = 0,05 dan dk = 60 yaitu 1,67. Hal ini berarti bahwa nilai thitung berada diluar daerah penerimaan H0 . Dengan demikian, terdapat pengaruh model pembelajaran kooperatif tipe SFAE berbantuan komik edukatif terhadap pemahaman konsep fisika siswa kelas X SMA Negeri 1 Palu.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"50 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130430402","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}
Media EksaktaPub Date : 2020-05-31DOI: 10.22487/me.v16i1.723
N. Nurjannah, A. Kade, Muhammad Jarnawi
{"title":"PENGARUH STRATEGI ROTATING TRIO EXCHANGE DALAM PEMBELAJARAN AKTIF TERHADAP PEMAHAMAN KONSEP FISIKA PADA SISWA KELAS VIII SMP NEGERI 13 PALU","authors":"N. Nurjannah, A. Kade, Muhammad Jarnawi","doi":"10.22487/me.v16i1.723","DOIUrl":"https://doi.org/10.22487/me.v16i1.723","url":null,"abstract":"Penelitian ini bertujuan untuk menguji adanya pengaruh strategi rotating trio exchange dalam model pembelajaran aktif terhadap pemahaman konsep fisika pada siswa kelas VIII SMP Negeri 13 Palu. Jenis penelitian yang digunakan yaitu eksperimen kuasi dengan desain “The Equivalent Pretest-Posttest Design”. Sampel dipilih menggunakan teknik purposive sampling. Kelas VIII C sebagai kelas eksperimen dan kelas VIII D sebagai kelas kontrol. Instrumen yang digunakan berupa tes pemahaan konsep fisika dalam bentuk esai yang telah divalidasi oleh ahli. Berdasarkan hasil pengolahan data, diperoleh rerata skor pretest pemahaman konsep fisika siswa kelas eksperimen adalah 12,86 dengan standar deviasi 2,44, untuk rerata skor posttest adalah 20,77 dengan standar deviasi 2,49. Untuk kelas kontrol diperoleh rerata skor pretest 12,68 dengan standar deviasi 2,03, sedangkan untuk rerata skor posttest adalah 18,04 dengan standar deviasi 2,38. Analisis data dilakukan dengan teknik statistik uji-t dua pihak dengan taraf signifikan α=0,05. Diperoleh nilai hasil thitung = 2,77 dan ttabel = 2,02. Ini berarti bahwa nilai thitung berada diluar daerah penerimaan Ho. Hasil ini menunjukkan ada perbedaan antara kelas eksperimen dan kelas kontrol. Dengan demikian dapat disimpulkan bahwa, terdapat pengaruh strategi rotating trio exchange dalam pembelajaran aktif terhadap pemahaman konsep fisika pada siswa kelas VIII SMP Negeri 13 Palu.","PeriodicalId":279720,"journal":{"name":"Media Eksakta","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132424075","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}