Kasmudin Mustapa, Kasmudin
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The Effects of Learning Strategies on Higher Order Thinking Skills

Jurnal Pendidikan Humaniora (JPH) Vol 2, No 4: Desember 2014
Publisher : Pascasarjana UM

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Abstract

Pengaruh Strategi Pembelajaran terhadap Kemampuan Berpikir Tingkat TinggiAbstract: The aim of this study to examine and explain interaction the difference among students’ higher order thinking skills taught using online learning and using expository with goal orientation of learning and goal orientation of performance on basic chemistry course. Using a quantitative ap-proach to quasi-experimental research design.  The subjects were students of chemistry education, consisting of 57 students (experiment) and 55 students (control). The instrument research was a written test and questionnaires. The data were analyzed using Anova (Analysis of Variance). The research findings there are differences among students’ higher order thinking skills with a mean post-test online instructional strategies is 45.16 higher than students taught using expository instructional strategy which is 39.28, instructional goal orientation is higher 44.24 than 40.07 performance goal orientation. there is no interactions between online instructional strategies and expository with different goal orientation on students’ higher order thinking skills in basic chemistry courses. Key Words: online, expository, goal orientation, higher order thinking skills, basic chemistry Abstrak: Penelitian ini bertujuan untuk menguji dan menjelaskan interaksi, perbedaan kemampuan berpikir tingkat tinggi mahasiswa yang diberi perlakuan pembelajaran online dan ekspositori dengan orientasi tujuan belajar dan orientasi tujuan penampilan pada mata kuliah kimia dasar. Menggunakan pendekatan kuantitatif dengan rancangan eksperimen semu. Subjek penelitian adalah mahasiswa pendidikan kimia berjumlah 57 orang (eksperimen) dan 55 orang (kontrol). Instrumen penelitian adalah lembar tes tertulis dan angket. Data Penelitian ini dianalisis dengan teknik Anova. Hasil penelitian ditemukan; terdapat perbedaan kemampuan berpikir tingkat tinggi mahasiswa dengan rerata posttest yang diberi perlakuan strategi pembelajaran online 45,16 lebih tinggi dari strategi pembelajaran ekspositori 39,28; serta rerata orientasi tujuan belajar 44,24 lebih tinggi dari orientasi tujuan penampilan 40,07. Namun tidak terdapat interaksi antara pembelajaran online dan ekspositori dengan orientasi tujuan berbeda terhadap kemampuan berpikir tingkat tinggi mahasiswa pada mata kuliah kimia dasar.Kata kunci: online, ekspositori, orientasi tujuan, kemampuan berfikir tingkat tinggi, kimia dasar

Pengaruh Pembelajaran Self Direct Learning Berbasis Teknologi Informasi Terhadap Hasil Belajar Siswa Pada Materi Struktur Atom di Kelas X SMA Negeri 9 Palu

Jurnal Akademika Kimia Vol 6, No 4 (2017)
Publisher : Universitas Tadulako

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Abstract

The aim of this study was to investigate the effect of self-direct learning based on information technology toward learning outcomes of students in the structure of atoms material in class X SMA 9 Palu. The population in this study was students of class X academic year 2016/2017. The samples were students (n=26) in the class XA as an experimental class (learning by direct self learning) and students (n=25) in class XC as the control class (learning by the conventional method).The data collection was done using an instrument of test results of studying chemistry at the structure of atoms material is valid. The data testing were using t-test statistical analysis of the two parties with the prerequisite test, the normality and homogeneity test. The data analysis results obtained that an average score of the experimental class = 71.04 and for the control class gained an average = 64.80. Based on the statistical hypothesis testing of test two parties obtained that value tcalculation= 6,50and ttable= 2,00ata = 0,05. In this case, H1was accepted and H0 was rejected because tcalculation was in the rejection area of H0.This shows that there was an effect on differences in learning outcomes of students that were taught by self-direct learning and by the conventional method in the structure of atoms material in class X SMA 9 Palu.

Uji Daya Hambat Ekstrak Buah Kelor (Moringa oleifera Lamk) Terhadap Pertumbuhan Jamur Candida Albicans

Jurnal Akademika Kimia Vol 5, No 4 (2016)
Publisher : Universitas Tadulako

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Moringa (moringa oleifera lamk) is a nutritious plant that can cure various diseases. Part of this plant such as leaves, roots, flowers, and fruits serve as a traditional medicine. The aim of this study is to determine the inhibitory of extract of moringa fruit on the growth of the fungus candida albicans. The extract of moringa fruit is made by using several solvents such as distilled water, ethanol and hexane. Suspension of the candida albicans obtained from Clinical Laboratory, Palu, Central Sulawesi. Suspension of the candida albicans is synchronized with Mc. Farland solution. The fungus test uses a pitting method. The results showed that inhibition of extract of moringa fruit on the growth of the fungus candida albicans with solvents of distilled water provides greater results as compared with ethanol and hexane. Based on the results of the observation, the percentage of inhibition of the extract of moringa fruit on the growth of the fungus candida albicans with various solvents are 100% for distilled water, 59.99% for ethanol and 6.97% for hexane. The result of phytochemical screening test showed that the moringa fruit contains alkaloids, flavonoids and steroids.

Pembuatan Pupuk Organik Dari Limbah Tandan Kosong Kelapa Sawit

Jurnal Akademika Kimia Vol 5, No 1 (2016)
Publisher : Universitas Tadulako

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Abstract

The study’s aim is to utilize waste oil palm empty bunches into organic fertilizer and analyze the levels of nitrogen (N) and phosphorus (P). The methods used may include sampling and laboratory analysis. To determine the levels of nitrogen (N) and phosphorus (P) on the organic fertilizer from TKKS waste, spectrodirect was used. Based on analysis, it was obtained that level of nitrogen (N) is 2.033% and phosphorus (P) was 0.107%, while the amount of moisture content was 47.53% and ash content was 36,66%. Based on the SNI about compost quality from organic waste, the results of this study indicate that waste TKKS can be used as raw material for organic fertilizer.

Pengaruh Penerapan Model Pembelajaran Kooperatif Tipe Teams Games Tournament Berbasis Scramble terhadap Motivasi dan Hasil Belajar Siswa SMA Kristen GPID Palu

Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine the effect of the cooperative learning model type teams scramble tournament games based scramble on motivation and learning outcomes students SMA Kristen GPID Palu. The population in this study were all students of class X. The research sample was students (n = 25) of class Xa as a control class and students (n= 24) of class Xb as an experiment class. The testing of student’s learning outcomes data was using the statistical analysis t-test of the two parties and the testing of student’s motivation using the questionnaire data used a descriptive analysis. The average score of student’s learning outcomes of the experiment class (X1) was 52.83 with a standard deviation of 11.97 and the control class (X2) was 48.12 with a standard deviation of 11.37. Based on the statistical analysis of the hypothesis by t-test two parties, it was obtained that –ttable ≤ tcalculation ³ +ttable (tcalculation = 2.09 and ttable = 2.02) with a significance level a = 0.05 and degrees of freedom = 47, then H0 was rejected and Ha was accepted, therefore it can be said that there is a difference in student’s learning outcomes using cooperative learning model type teams tournament games based scramble. The results of the data analysis of student motivation indicated that the percentage value for the experimental class was 83.4% and for the control class was 81.21% and both were on the agrees attitude with the positive category, so it can be concluded that there is an influence of the cooperative learning model type teams scramble tournament games based scramble on motivation and learning outcomes of students SMA Kristen GPID Palu.

Penerapan Model Pembelajaran Kooperatif Tipe Make a Match untuk Meningkatkan Hasil Belajar Siswa pada Materi Larutan Elektrolit dan Non Elekrolit di Kelas X Madrasah Aliya DDI Lonja

Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This research describes the differences of student’s learning with the application of cooperative learning type make a match in the electrolyte and non-electrolyte at the X grade student’s of the Madrasah Aliya DDI Lonja. This research used quasi experimental with non randomized pretest-posttest control group design. This research was conducted with two groups: XA as the experimental (n=21) XB as the control group (n=18). The data findings means score of experimental group (X1) is 70,5 with the standard deviation 9,6 and the control group (X2) is 62.0 with the standard deviation is 6. Based on the results, the researcher concludes cooperative learning type make a match has better than control class that used conventional learning model.

Pengaruh Model Pembelajaran Guided Inquiry dengan Mind Map terhadap Hasil Belajar dan Motivasi Siswa pada Materi Redoks di Kelas X SMA Negeri 5 Palu

Jurnal Akademika Kimia Vol 6, No 2 (2017)
Publisher : Universitas Tadulako

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This study aimed to investigate the effect of guided inquiry learning model with mind map toward learning achievement and motivation of students on Reduction-Oxidation in Class X at SMA 5 Palu. This study was a quasi-experimental design with a non-randomized pretest-posttest control group design. This study was carried out by holding two groups of Class X Sciences 1 as the experimental group (n = 31) and Class X Sciences2 as the control group (n = 32). Testing of learning achievement data of students used t-test statistical analysis of two parties with the prerequisite tests: normality and homogeneity tests of written test given after learning (posttest). Results of the data analysis showed the average value (i) of the experimental class was 56.48 with a standard deviation of 11.07, and (ii) of the control class was 46.25 with a standard deviation of 11.98. Based on the hypothesis test results with t-test statistical of two parties obtained -ttable ≤ tcountt≥ + ttable (tcount = 2.43 and ttable= 1.67) with a significance level of α = 0.05 and degrees of freedom of 61, then H0 is rejected and Ha is accepted. Results of the data analysis of students motivation by using descriptive statistical analysis from the questionnaire of students motivation showed that the experimental class was currently on attitudes agree with the positive category of 82.58%, and the control class was on attitudes agree with the positive category of 83.78%.It can be concluded that there was an effect of guided inquiry learning model with mind map toward learning achievement of students, but it had no effect on the motivation of students in Class X at SMA 5 Palu on Reduction-Oxidation.

Pengaruh Ekstrak Tanaman Putri Malu (Mimosa pudica Linn) Terhadap Penurunan Kadar Glukosa Darah Pada Mencit (Mus musculus)

Jurnal Akademika Kimia Vol 6, No 1 (2017)
Publisher : Universitas Tadulako

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The research aim is to determine the effect of mimosa plant (mimosa pudica Linn) to reduce blood sugar levels in mice and determining the effective concentration of mimosa plant extracts as an alternative to decrease blood sugar levels. The extract is produced by the infusion method. The animal test used is male mice with amount 18 mice that induced by EDTA (ethylene diamine tetraacetic acid). Mice are divided into 6 groups randomly with different treatment. The group I, II, III and IV were given the mimosa plant extract with a concentration of 10, 20, 30, and 40% (w/v) respectively while group V is given glibenclamide suspension as positive control (+) and group VI is given Na-CMC 1% as negative control (-). Data were analyzed using the statistical test analysis of variance (ANOVA) and then followed by Duncan test. The results showed that the mimosa plant extract contains flavonoids, alkaloids, and tannins. In preclinical testing of mimosa plant extract proven to reduce blood sugar levels in mice and the most effective concentration is a concentration of 20% (w/v) with significantly α = 0.05.

Pengaruh Penerapan Model Pembelajaran Kooperatif Tipe Numbered Head Together dipadu Contextual Teaching and Learning Terhadap Hasil Belajar Siswa SMA Imanuel Palu

Jurnal Akademika Kimia Vol 7, No 2 (2018)
Publisher : Universitas Tadulako

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Abstract

This study aim was to determine the influence of application of cooperative learning model type numbered head together combination with contextual teaching and learning toward learning outcomes of students in SMA Imanuel Palu. This study used quasi experimental design with non randomized pretest-posttest control group. Sample used were two classes, Xb (n=30) as experimental and Xa (n = 30) as control one. The test of student learning outcomes data used the t-test statistical analysis of the two parties. The results of data analysis obtained, the average score of experimental class () was 50.50 with a standard deviation of 9.79 and for control class () was 41.03 with a standard deviation of 11.01. The result of testing hypothesis with the statistical t-test of two parties obtained that –ttable < tcalculation > +ttable (tcalculation = 2.35 and ttable = 2.00) with a significance level α= 0.05 and 58 degrees of freedom, then H0 was rejected and Ha was accepted. The result of the data analysis showed that there was any in learning outcomes between students in experimental class and the control class, until concluded there is any influences of application of cooperative learning model type numbered head together combination with contextual teaching and learning toward learning outcomes of students in SMA Imanuel Palu.

Analisis Kadar Glukosa pada Nasi Putih dan Nasi Jagung dengan Menggunakan Metode Spektronik 20

Jurnal Akademika Kimia Vol 6, No 2 (2017)
Publisher : Universitas Tadulako

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Abstract

Study on the main content of carbohydrates in rice and corn has been done. This study aims to determine the glucose level in a mixture of corn and rice with a certain ratio prior and during storage in a rice cooker. Spectronic 20 was used in this study to measure the absorption wavelength of sample solutions. Samples used in this study were from rice and sweet corn (Zea mays L. Saccharata) in various ratios of 1:0, 0:1, 1:1, 1:2, 2:1, 3:1 and 1:3, and variations in storage of 0, 1, 6, 12, 18, 24, 30, and 36 hours. The results showed that the highest glucose level in corn were of 32.250 ppm within 12 hours storage, and 40.447 ppm in rice for 12 hours storage. The highest level of glucose in mixture of corn and rice for 12 hours storage was 67.546 ppm at a ratio of 1 : 3.