Mitra Sains (E-Journal)
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Maksimisasi Keuntungan Usahatani Cabai Dan Tomat Dengan Kendala Faktor Produksi Di Desa Pombewe, Kecamatan Sigi Biromaru, Kabupaten Sigi
Get PDFThe aim of research to analyze the actual profit, profit maximization, and the sensitivity of chilli and tomato farm in the village of Pombewe, District Sigi Biromaru, Sigi. The sampling technique conducted a census that as many as 17 people. Data collected by interview using interview guideline. Secondary data obtained from the village monograph, BPS and various journals. The results using the actual profit earned revenue analysis of chilli and tomato farming in aggregate on an area of 0.69 Ha reached Rp 43.331.876,47, and partially chili farm with an area of 0.33 Ha reached Rp 23.280.509,12 and tomato farming with an area of 0.36 Ha reached Rp 20.051.387,35. Analysis using linear program obtained maximization profit of Rp 129 599 700, - with chilli farming area of 1.03 Ha and 1.02 Ha of farming tomatoes. Sensitivity analysis of optimization that has been achieved is determined by the change in the willingness of each seed seeds chili> 16.20 sachet or tomato seeds> 29.72 sachet
Penerapan Model Pembelajaran Kooperatif Tipe Jigsaw Untuk Meningkatkan Aktivitas Dan Hasil Belajar Siswa Pada Mata Pelajaran IPA Kelas VI SDN Tompu Kecamatan Sigi Biromaru
Get PDFThe research was conducted on a semester at SDN Tompu Biromaru Sigi District of school year 2014-2015. Problems in the study was whether the application of Jigsaw cooperative learning model can improve the activity and results of the sixth grade students learn science SDN Tompu District of Sigi Biromaru. The method used is a cyclic method at class action research with two cycles. Each cycle consists of two meetings results showed that the application of cooperative learning model Jigsaw shown to enhance the activity and the results of learning science in grade VI SDN Tompu Biromaru Sigi District of criteria that are in the category of fairly to very good. While the magnitude of the increase in student learning outcomes cycle I were in the medium category and second cycle were in the high category. Thus, it was concluded that the application of Jigsaw cooperative learning model can improve the activity and the results of the sixth grade students learn science SDN Tompu District of Sigi Biromaru
Pengaruh Model Pembelajaran Kooperatif Tipe Think Pair Share Dan Gaya Kognitif Terhadap Hasil Belajar Siswa Pada Mata Pelajaran Biologi Kelas XI IPA MAN 2 Model Palu
Get PDFThis study aimed to: (1) describe the influence of cooperative learning model of TPS type and cognitive style toward the students’ learning result on Biology subject of the XI grade Science Program at MAN 2 Model Palu. This study applied quasi experimental method. The population of this study engaged 108 students which were administered into four classes. The sample for this study were selected through the implementation of random sampling technique, thus there were two classes selected with 48 students involved. The data collected in this study was the post-test scores which were analyzed through inferential statistic method. The data analysis drew on two-way Annova. The result of the analysis showed that: (1) The cooperative learning model of TPS type has contributed a significant effect toward students’ learning achievement. This model has surpassed the Direct Instruction model, (2) Cognitive style has significantly influenced toward students’ learning achievement. Students with field independent cognitive style have a higher learning achievement rather than those who were with field dependent cognitive style, (3) the interaction between learning model and cognitive style has no significant effect on students’ learning achievement. This has proved that learning model and cognitive style has functioned independently
Kajian Peningkatan Asam Lemak Omega-3 EPA dan DHA Pada Minyak Ikan Lele Yang Diberi Pakan Minyak Kacang Kedelai
Get PDFThe experiment purpose to find out fatty acid profil in catfish oil were used soybean oil with different level and to detect soybean oil concentrate in dietary hight produce catfish oil contens omega-3 fatty acid EPA and DHA. This research uses experimental methods and experimental design used completely randomized design (CRD) with five treatments , the percentage giving linolenic acid in the feed catfish at A = 0 % , B = 5 % , C = 10 % , D = 15 % , and E 20 % with each of the three replicates (15 experimental units) . Data were analyzed statistically is the content of EPA and DHA oils catfish at each treatment . Catfish oil extraction is done by wet rendering . How to wet rendering applied to fish that are high in fat and in large numbers . Further fatty acid content is determined based on the area that is formed using a Gas Chromatography . Soy bean oil as a source of linolenic acid in the diet had no effect on oil fatty acid profile catfish (Clarias sp) in terms of the aspect of the type of fatty acids , but in terms of aspects of the concentration of each type of soybean oil fatty acids influence . Changes in fatty acid levels to concentrations of soybean oil are generally not patterned , the pattern follows the curve of a parabola and hyperbole, at concentrations of 0%, 5% trend fatty acid concentration increased until optimal at concentrations of 10% and at a concentration of 15 % and 20 % trend of concentration fatty acids then declined. Soybean oil concentration in the feed oil producing catfish containing omega-3 fatty acids , EPA and DHA concentration is highest at 10 % . Generated at these concentrations of omega - 3 fatty acids 8.33%, 5.05% EPA and DHA of 1.14 %
Perilaku Metakognisi Siswa Dalam Menyelesaikan Masalah Kimia
Get PDFThis study describes the metacognition behavior of students on problem solving in degree of acidity calculation. This research was conducted at SMAN 1 Pamona Utara and at SMA GKST 2 Pamona Puselemba. Research subjects were 6 students of class XII IPA determined based on the respondents test selection into high, middle and low categories. This study is a qualitative research. Research data were as test results, thinking-aloud transcripts, and interviews as well as the results of the inventory questionnaire metacognition activity. The data were described and tested using the triangulation method. Results of thinking-aloud data analysis showed that the high and the middle categories were able to assess the mistakes. The high category tend to monitor mistakes while making calculations. The middle category emphasized on parts of calculations to avoid mistakes and justify the calculations and the solutions. The middle category also tend to check the problem solving steps. The low category checked the answers. Results of the questionnaires showed that the average metacognition activity of the middle category was the highest, and the low category was the lowest. The lack of students' knowledge on the concepts and principles of the problem caused students could not solve the problem either. The highest level of students' metacognition in this study was the strategic use
Analisis Pengaruh Bauran Pemasaran Terhadap Volume Penjualan Bawang Goreng Di Kota Palu
Get PDFThis research aims to determine the effect of product, price, place and promotion Against sales volume of fried onion in Palu. The population in this research as many as 52 industry fried onions. The total sample as many as 34 industries that considered representative of the population. Data were analyzed using multiple linear analysis. The analysis showed that the value Ftest (9,815) > Ftabel (4,04), this means that the independent variable (Xi) simultaneously the effected significantly toward dependent variable (Y). The coefficient of determination (R²) equal to 0.775 atau 77,50%, which means that the industry's sales volume fried onions (Y) may be described or explained simultaneously by the product variable (X1), price (X2), place (X3), and promotion (X4), while the remaining 22,50% is explained by other variables not included in the model
Perbedaan Model Pembelajaran Modified Free Inquiry (MFI) Berbasis Laboratorium Riil Dengan Virtual Pada Pokok Bahasan Laju Reaksi Terhadap Hasil Belajar Kimia Siswa SMAN 1 Pasangkayu
Get PDFThis study aims to determine the differences between MFI learning model based on real and virtual laboratory on the subject of reaction toward the students outcomes of chemical learning at SMAN 1 Pasangkayu. The sample consisted of two classes of grade XI IPA 5 which was 29 people as an experimental class I and grade XI IPA 6 which was 29 people as an experimental class II determined Cluster Random Sampling. Data was collected using test instruments such as achievement test. The research data used statistical analysis t-test (Independent Sample Test) with the prerequisite test was a normality and homogeneity test. The average score of the students outcomes of chemical learning by using MFI model based on real laboratory was 73.01 and the average score of the outcomes of students chemical learning by using MFI model based on virtual laboratory was 80.52. Based on statistical analysis with t-test hypotheses obtained value |tcount| = 3.833 and it was located in the region of rejection of H0 between -2.003 and 2.003. These results indicate that there was a difference between MFI learning model based on real and virtual laboratory on the subject of reaction rate toward the students outcomes of chemical learning at SMAN 1 Pasangkayu
Pembelajaran Direct Instruction Berbasis Animasi Terhadap Konsepsi Siswa Materi Ikatan Kimia Kelas X Sman 1 Dondo Kabupaten Tolitoli
Get PDFUncomplete assessing of materials abstract in learning of chemistry will lead to students on experiencing misconceptions as a result of the wrong internalization. This study aimed to analyze the positive effect and significance of the direct instruction learning based on animation to wards students’ conceptions of chemical bonding in the Grade X at SMAN 1 Dondo Tolitoli. This study applied a quasi-experimental method with one group pretest-posttest design. Samples were 29 students determined by purposive sampling. The independent variable in this studywas the direct instruction learning, while the dependent variable was the students' conceptions. The data acquisition instrument was in the form of a diagnostic test consisted of 20 multiple-choice questions and reasons using Certainty of Response Index (CRI). Data was analyzed using t-test two sample pairs. Hypothesis test results obtained –taccount (-16.37) <-ttable (-2.05) at significance level of 5%. This study concluded that there is a significant effect positively of direct instruction learning based onanimation to improvestudents’ conceptions in the Grade X at SMAN 1 Dondo Tolitoli, with the effect size d = 2.8 or with a relatively large level of effectiveness
Pengaruh Model Pembelajaran Kooperatif Tipe NHT (Numbered Heads Together) dan Kemampuan Awal Terhadap Hasil Belajar Siswa pada Mata Pelajaran Fisika Di SMP Negeri 2 Poso
Get PDFThis education research aims to investigate the difference learning outcomes of the students taught using cooperative learning model NHT type and conventional type on physics subject of SMP Negeri 2 Poso, find out the different result of students with high beginning ability and those have low ability on physics, and find out whether any or not interaction of learning model and beginning ability of the students learning outcomes on physics. The Population was 130 students of the eighth grade. The research sample consisting of class VIIIA and VIIIB. Design used was factorial 2 x 2. The data were collected through thinking ability and learning achievement test. The data were analyzed by using ANOVA two ways. The result indicates that there was difference of learning outcomes of students taught cooperative learning NHT type from those taught conventional method (p-value < 0,05), different learning outcomes of the students with high beginning ability and those with low beginning ability (p-value < 0,05), no interaction between learning model and beginning ability toward the students learning outcomes (p-value > 0,05) that means the students with high beginning ability will be better their learning outcomes than those with low beginning ability of cooperative learning model NHT type or conventional learnin
Pengembangan Bahan Ajar Dengan Model Dick, Carey & Carey Pada Mata Pelajaran IPA Kelas XI SMK Negeri 5 Palu
Get PDFThe research aims at developing Natural Science Subject Instructional packages of year XI Semester 1 SMK Negeri 5 Palu by employing Dick, Carey & Carey Model. The research employed Research Development (R&D) design. The instructional package drafts that have been previously developed were validated by a content expert, a design expert, and a media expert. The revised version of the packages were tried out into three different subjects; individual, small group, and big group which contained 25 students and 1 teacher. Questionnaire designed in Likert Scale was used as the instrument of data collection. Suggestion, input and comment during consultation period were also noted and used to compliment the collected data from the questionnaire. The results of the data analysis show that 1) the instructional materials product score ranges from 81.33% to 83.80% indicating that the instructional material is classified Good and Very Good, 2) the teacher’s book product score ranges from 80.00% to 91.25% indicating that the teacher’s book is classified Good and Very Good, 3) the student’s book product score ranges from 80.00% to 94.67% indicating that the student’s book is classified Good and Very Good. Based on Kuswadi’s argument (in Sudarman, 2006) if the developed instructional packages scored higher than 71%, the products are ready and valid to be used. The achievement of the students, between the pretest and the posttest, during the instructional materials try out is different significantly calculated by applying t-test formula. It implies that the instructional packages have been valid and ready to be used