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I Made Tangkas
Program Studi Gizi, Fakultas Kesehatan Masyarakat, Universitas Tadulako, Kota Palu, Indonesia
Agriculture, Biological Sciences & Forestry Chemistry Education Medicine & Pharmacology Nursing Public Health Veterinary Other

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Journal : Jurnal Akademika Kimia

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PENGGUNAAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD (Student Teams Achievement Division) UNTUK MENINGKATKAN HASIL BELAJAR KIMIA POKOK BAHASAN LAJU REAKSI PADA SISWA KELAS XI IPA SMA NEGERI 7 PALU Angriani, Eva; Tiwow, Vanny M.A.; Tangkas, I Made
Jurnal Akademika Kimia Vol 2, No 4 (2013)
Publisher : Universitas Tadulako

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Abstract

The research was conducted at SMAN 7 Palu for the purpose to improving student learning outcomes of Chemistry through the use of Cooperative Learning Type STAD methods (Student Teams Achievement Division) on the chemistry subject of reaction rate. Population of this research was all students in class XI IPA SMA Negeri 7 Palu academic year 2012/2013, consisting of 3 classes. The sample were in class XI IPA 2 with total 34 students, as the experimental class that used cooperative learning STAD method and class XI IPA 1 with total 37 students as a control class (not used Cooperative learning STAD methods). The data were collected by using the test instrument. The data collecting result use the statistical analysis t-test with the prerequisite test for normality and homogeneity tests. The study shows that the mean value of student learning outcomes use cooperative learning STAD model is 7.66; the mean value of student learning outcomes without using cooperative learning STAD model was 5.57. Based on the hypothesis testing using statistical t-test in the right side earned value thitung > ttabel is 5.36 > 1.66 with degree of freedom = 0.05 and dk = 69. The results shows that the use of cooperative learning STAD model could improve learning outcomes of students in reaction rate of chemistry subject.
PEMANFAATAN MOLYMOOD TERHADAP HASIL BELAJAR SISWA PADA KONSEP ALKANA, ALKENA DAN ALKUNA PADA SISWA KELAS X SMA NEGERI 2 DOLO Sulhajir, Wahyuni; Nuryanti, Siti; Tangkas, I Made
Jurnal Akademika Kimia Vol 2, No 4 (2013)
Publisher : Universitas Tadulako

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Abstract

This research was done due to known that most students got difficulty in learning and understanding chemistry material particularly on alkana, alkena and alkuna concept. This problem occured because there was still any teacher who use conventional method in delivering the material. To make the material easy to learn, not boring and easy to understand, the teacher needs to give a learning media. The objective of this research was to increase the students’ learning outcome on the material of alkana, alkena and alkuna in SMA Negeri 2 Dolo by applying Mollymood aid. The population of the research was the tenth grade students of SMA Negeri 2 Dolo in academic year 2012/2013 with sample was 26 students of Class XA as the experimental class (given Mollymood aid for learning)and 26 students of Class XB as the control one (given conventional method). The technique of data collection done through instrument such as achievement test of alkana, alkena and alkuna. The data analysis result obtained average score on experimental class was 23.35 with deviation standard was 2.66 whereas for control class the average obtained was 20.73 with deviation standard was 2.77. Hypothesis testing result obtained tcounted = 4.59 and ttable 1.67 with significant level (α) = 0.05. Based on the research result, it showed that there was a significant difference between students’ learning outcome on chemistry taught using molymood aid and conventional one of the tenth grade students of SMA Negeri 2 Dolo in academic year 2012/2013.
Pengaruh Model Pembelajaran Kooperatif Tipe Two Stay Two Stray Terhadap Hasil Belajar Siswa Kelas XI IPA Di SMA Negeri 2 Pasangkayu Pada Pokok Bahasan Bentuk Molekul Lestari, Lestari; Tangkas, I Made; Sabang, Sri Mulyani
Jurnal Akademika Kimia Vol 3, No 1 (2014)
Publisher : Universitas Tadulako

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Abstract

The basic principle in the learning activities is student-centered learning. This requires a learning model that empowers students to be more actively involved in the learning process at school one cooperative learning model Two Stay Two Stray (TSTS). This study aims to determine the effect of cooperative learning model TSTS to see a difference in student learning outcomes between cooperative learning model TSTS and conventional learning on the subject of molecular geometry. The study population was all students class XI Science SMAN 2 Pasangkayu Academic Year 2013/2014. The study sample consisted of two class, namely class XI Science 2 as many as 25 people as the experimental class and class XI Science 1 by 27 people as the control classes determined by purposive sampling. Data collection was conducted using test instruments which consist of 20 items. Testing research data used t-test statistical analysis of the two parties with the prerequisite test that tests for normality and homogeneity tests. Average score of student learning outcomes using cooperative learning model TSTS is 74.06 while the average score of student learning outcomes that follow conventional learning is 66.5. Based on statistical analysis by t-test hypotheses two parties obtained tcount = 2.83 and this is in the region of rejection of Ho, namely -2.00 and 2.00. These results indicate that there are differences in student learning outcomes given cooperative learning model TSTS with conventional.
Metode Everyone is Teacher Here Pada Materi Ikatan Kimia di Kelas X SMAN 1 Marawola Milawati, Milawati; Pursitasari, Indarini Dwi; Tangkas, I Made
Jurnal Akademika Kimia Vol 3, No 2 (2014)
Publisher : Universitas Tadulako

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Abstract

Teaching and learning is a process involving interaction with active communication between students and teacher in educational activities. Therefore we need a method of learning that is focused to the students. This research uses learning Everyone is Teacher here method (ETH). The aim of this research was to determine the influence of the use of ETH methods on chemical content on learning outcomes and communication skills at tenth grade student of SMAN 1 Marawola generation 2013/2014, the sample of research was class XF as a class experiment with the application of learning ETH method (n = 20) and class XB as a control class without the use of learning ETH method (n = 21). Data were collected by observation, initial test, and final test. The data were analyzed by descriptively and right side t-test. The results of the analyzed of the data shows the average score in the experimental class = 83.95 and for control class = 70.36, both classes distributed were normally and have the variance (F test) are homogeneous. Testing hypotheses t test obtained tcount = 5.57 > ttabel = 1.68 with a significance level (α) = 0.05. In this case H1 was accepted and H0 was rejected, because of tcount were in H0 rejection region. The results suggest the application of learning ETH method has posirive side on learning outcomes and student communication skills in chemical material.
Model Pembelajaran Kooperatif Tipe Make A Match Pada Topik Penamaan Senyawa Dan Persamaan Reaksi Di Kelas X SMA Negeri 1 Dampelas Hardianti, Titi; Pursitasari, Indarini Dwi; Tangkas, I Made
Jurnal Akademika Kimia Vol 3, No 4 (2014)
Publisher : Universitas Tadulako

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Abstract

The learning method applied on chemistry study nowadays is still one-way; students act as listeners and are not active on learning processes in the classroom. The goal to be achieved on this research was to determine the effect of cooperative leraning model make a match type on compounds and chemical equations naming topic towards the students’ learning outcome and to their critical thinking skill of X grade students of SMA Negeri 1 Dampelas consisting of 6 classes. 2 classes were taken as samples by purposive sampling; 28 students of class XE as control class and 28 students of class XF as the experimental class. The research instruments used were tests and observation sheet. Descriptive and inferential statistics analysis methods were used asthe data analysis technique. Statistics analysis of right side t-test was used for testing the research data. The average score of learning outcome achieved as the research result were 78.96 of experimental class and 60.92 of control class and the average score of critical thinking skill were 74.75 for the experimental class and 65.75 for the control class. The research result showed that the use of cooperative learning model make a match type on compounds and chemical equation naming topic made the students’ learning outcome and crictical thinking skill better.
STUDI KOMPARATIF HASIL BELAJAR SISWA MELALUI PEMBELAJARAN TERPADU MODEL CONNECTED BERBASIS KOOPERATIF PADA BIDANG STUDI IPA DENGAN MATERI BAHAN KIMIA DALAM MAKANAN PADA SISWA KELAS VIII SMP NEGERI 19 PALU Timang, Rosmiati; Tangkas, I Made; Sakung, Jamaluddin
Jurnal Akademika Kimia Vol 2, No 2 (2013)
Publisher : Universitas Tadulako

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Abstract

This research was aimed at finding out the comparisons of students study output of Class VIII of SMP Negeri 19 Palu, done by the implementing connected model of integrated learning - based cooperative learning and conventional model. This research was quasi experiment with pre test-post test control group design. The research sample was chosen through purposive sampling technique with two classes involving experimental and control classes. Those were Class VIIIA as the experimental class while Class VIIIB as the control one, who have the same class average value. The technique of collecting data was essay test consisting of five test items. The data analysis result showed that the average of post test and pre test score difference of the control class was 4.84 while the experimental one was 10.92. The result of statistical calculation of these two classes which tested through U-Mann Whitney Test with and 95%, degree of freedom was Zcounted < Ztable (-4.594 < -1.96). It means that there were significant differences of students study output between experimental class and control one. Therefore, the integrated learning can be applied at school in order to increase the students study output and the meaningful learning of students.
PENETAPAN KADAR RHODAMIN B DAN NATRIUM BENZOAT PADA SAUS TOMAT YANG BEREDAR DI WILAYAH PASAR INPRES KOTA PALU Wardanita, Wardanita; Jura, Minarni Rama; Tangkas, I Made
Jurnal Akademika Kimia Vol 2, No 4 (2013)
Publisher : Universitas Tadulako

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Abstract

This research was conducted to determine the level of a dye, rhodamin B, and a preservative, benzoic acid, on tomato sauce distributed in the area of Palu city. The food additive is used in order to get more interesting color and the benzoic acid is used to keep the food fresh for a long period of time. The research method used was a thin layer chromatography. It was aimed at knowing weather there was a dye called rhodamin B in the research sample or not. From the analysis result, it can be said that the sample did not contain the dye rhodamin B. in addition, another research method used was alkali acid titration which was used to examine the sample quantitatively and qualitatively. From the qualitative examination, it was found that all tomato sauced sampled positively contained the preservative benzoic acid. The tomato sauce produced by Mojokerto-Indonesia contained 34.7mg/kg while the one produced by Urabaya-Indonesia contained 40mg/kg. In conclusion, (1) all sample of tomato sauce examined did not contain Rhodamin B,the red dye substance, which was forbidden to be used for food, cosmetics, and medicine according to the Health Ministerial Regulation of Indonesian Republic No. 722/Menkes/Per/IX/1988 concerning food composition; and (2) the content level of Benzoic Acid in tomato sauce spread out in the traditional market, Inpres, Palu city has fulfilled the standard, i.e. + 1000 mg/kg. However, it is expected that all people must still be careful when buying and using tomato sauce.
DAYA INSEKTISIDA ALAMI KOMBINASI PERASAN UMBI GADUNG (Dioscorea hispida Dennst ) DAN EKSTRAK TEMBAKAU ( Nicotiana tabacum L) (The Natural Insecticide Capacity of Squeeze Combination of Cassava (Dioscoreahispida Dennst) and Tobacco’s Extract (Nicotiana t) Hasanah, Misroul; Tangkas, I Made; Sakung, Jamaluddin
Jurnal Akademika Kimia Vol 1, No 4 (2012)
Publisher : Universitas Tadulako

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Abstract

The research regarding the natural insecticide capacity of squeeze combination of cassava (dioscoreahispida Dennst) and tobacco’s extract has been done. The purposes are to measure the capacity of squeeze combination of cassava and tobacco’s extract as a natural insecticide and to determine the most effective combination as natural insecticide. The method was the laboratory experiments by using squeeze cassava and tobacco’s extract with the comparison ratio (in mL) as follow; 0:100, 25:75, 50:50, 75 : 25, and 100 : 0. The using of various comparisons is to determine the most effective combination as natural insecticide. The data were analyzed by the statistical test analysis of variance (ANOVA) with a 95% confidence level. The result shows that the squeeze combination of cassava and tobacco’s extract reduce the capacity of natural insecticide which is dioscorin compound in cassava and nicotin in tobacco.However, the most effective treatment to kill rice pest is the mixture of cassava and tobacco 0 mL : 100 mL, and also 100 mL : 0 mL.
Analisis Kandungan Vitamin C Dan Kalium Dalam Labu Kuning (Cucurbita Moschata) Setiawan, Heri; Sabang, Sri Mulyani; Tangkas, I Made
Jurnal Akademika Kimia Vol 3, No 4 (2014)
Publisher : Universitas Tadulako

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Abstract

Research has been conducted to determine the level of vitamin C by a visible spectrophotometer, and a metal content of potassium (K) from pumkin sample (Cucurbita Moschata) by Atomic Absorption Spectrophotometer (AAS). Measuring the levels of vitamin C in the sample performed at a wavelength (λ) = 510 nm and measuring the levels of potassium in the sample performed at a wavelength (λ) = 766,5 nm. The results obtained by the levels of vitamin C is sample A (pumpkin from Jono oge village) obtained at 6 mg/L, sample B (pumpkin from Sidera village) obtained at 4,5 mg/L, and sample C (pumpkin from Toro village) obtained at 0,97 mg/L. While the metal content of potassium is sample A (pumpkin from Jono oge village) obtained at 23,22 mg/L, sample B (pumpkin from Sidera village) obtained at 22,22 mg/L, and sample C (pumpkin from Toro village) obtained at 20,22 mg/L. These data indicate that the levels of vitamin C and potassium sample A higher than sample B and C.
PENGGUNAAN MODEL PEMBELAJARAN LEARNING CYCLE BERBASIS PETA KONSEP PADA MATERI KESETIMBANGAN KIMIA UNTUK MENINGKATKAN HASIL BELAJAR SISWA KELAS XI SMA NEGERI 1 DAMPELAS KABUPATEN DONGGALA Astuti, Ni Luh Murni; Tangkas, I Made; Supriadi, Supriadi
Jurnal Akademika Kimia Vol 2, No 4 (2013)
Publisher : Universitas Tadulako

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Abstract

Student learning outcomes will be better if the experience for themselves what really happened. They will continue to remember the events that ever happened; therefore we need a method of teaching that is oriented to students. The purpose of this research is to improve learning outcomes chemistry of students class XI at SMA Negeri 1 Dampelas using learning cycle model base map concept in equilibrium topic of chemical. The Population of this research was all students in class XI SMA Negeri 1 Dampelas which consists of 4 classes. The sample was taken 2 classes with purposive sampling technique, which are class XI IPA 2 as much as 32 students as the experiment and class XI IPA 1 as much as 32 students as the control class. Research data collection was done by using a test instrument in the form of test results of chemical equilibrium. Testing research data using statistical analysis of t-test the right side and prerequisite test is homogeneity and normality test. The median score of student learning outcomes using learning cycle methods is 17.18 while median score of student learning outcomes with conventional learning is 14.25. Based on the calculation of the t test statistic obtained t_calc= 3.71, this show that in the region of rejection H_0 is 2.00. It can be concluded that there is an increase student learning outcomes with learning cycle model base map concept than students’ conventional teaching of class XI IPA SMA Negeri 1 Dampelas on the subject of chemical equilibrium
Co-Authors Afadil, Adila Humaira Agustin Tiwow Aiman, Ummu Alfin Pania Angriani, Eva Ariani Ariani Ariani Ariani Ariani Ariani Astuti, Ni Luh Murni Aulia Rakhman Desmeli Desmeli, Desmeli Devi Nadila Diah Ayu Hartini Dinda Widi Wisudarsari Djibran, Anifah Salsabila Elvian Togagu Fandir, Abdul Fatimatuzzahra Fatimatuzzahra Fendi Pradana Firman P Hardianti, Titi Hijra Hijra Holyness Nurdin Singadimedja Husna, Saadatul Husnul Khatimah I Gusti Ngurah Antaryama Indarini Dwi Pursitasari Irwan Irwan Isna Basonggo Jamaludin M Sakung Linda Ayu Rizka Putri Made Bayu Oka Widiarta Maharani, Dhea Putri Marwah Marwah Merionto Soilo Milawati Milawati Minarni Rama Jura Misroul Hasanah Nadila, Devi Ni Luh Made Krisna Dwipayanti Nurdin Rahman Nurulfuadi Nurulfuadi Putu Dian Prima Kusuma Dewi Putu Sukma Megaputri Randani, Aldiza Intan Ratman Ratman Resni Taung Rusli, Riana A. Salsabila, Unik Hanifah Sangkala, Serti A. Siti Ika Fitrasyah Siti Nuryanti Sri Mulyani Sabang St. Ika Fitrasyah Suherman Suherman Sulhajir, Wahyuni Syamsul Arifin Timang, Rosmiati Tutri Aprilia Mellyni Ummu Aiman Ummu Aiman Wardanita, Wardanita