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INDONESIA
Jurnal Entropi
Published by Universitas Negeri Gorontalo
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Core Subject : Education,
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Articles 18 Documents
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Search results for , issue "Vol 5, No 1, 2009" : 18 Documents clear
KAJIAN TENTANG KEMAMPUAN SISWA DALAM MENGIDENTIFIKASI JENIS-JENIS IKATAN PADA SENYAWA KIMIA YANG TERDAPAT DALAM BUKU PAKET KIMIA SMA OLEH SISWA KELAS XI SMA NEGERI I GORONTALO ( Suatu Penelitian Di SMA Negeri 1 Gorontalo ) Salilung, Pratiwi; Pikoli, Masrid; Sihaloho, Mangara
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

This research is descriptive method, the aim of this research is to know the students ability to determine the kinds of chemical compound which found from SMA text book. The population in this research at class XI IPA SMA Negeri 1 Gorontalo concist of 93 students academic year 2008/2009. The sample of this research are students XIIB1, XIIB2, XIIB3 and XIIB4. To collecting the sample of research based on the average of the class according to the information which I get from the teacher. The instrument of this research by using the text and three alternative answer, and one of the answer 35 items. The result of experimental text get validasi is 85,66% and the reabilities koefisien is 0,92. The result of this research shows that the percentage of the students at class II SMA Negeri 1 Gorontalo who can be identify the kinds of chemical compound include in SMA text book, they are : (a) the bond ionic of ion kation and anion (28%), (b) the bond of kovalen nonpolar at chemical homodiatomic (86%), (c) the bond kovalen polar at the chemical heterodiatomic (50%), (d) the bond ionic at the yudium with simple kation and anion polyatomic (15%), (e) the bond of ionic at the yudiom with kation and anion polyatomic (46%), (f) the bond kovalen polar at the ion polyatomic in one yudium (54%), (g) the bond kovalen polar at the ion polyatomic (75%). The patterns of the students mistakes it can be identifier, there are: (a) relation between the same of two atom nonlogam is a relation with kovalen polar, (b) relations of the differences between two of nonlogam include of ionic compound, (c) relation between cation and anion in one of yudium include kovalen compound polar, (d) relation between cation and anion in one of yudium include kovalen compound polar, (e) relation in between kation and anion in one of yudiom include kovalen compound nonpolar, (f) relation between atom logam and atom nonlogsm include of kovalen compound nonpolar, (g) relation between atom logam and nonlogam of polar.
MENINGKATAN HASIL BELAJAR SISWA KELAS XI IA2 DENGAN MENGGUNAKAN STRATEGI EVERYONE IS A TEACHER HERE PADA PEMBELAJARAN KIMIA MATERI HIDROLISIS GARAM (Suatu Penelitian Tindakan Kelas di SMA Negeri 4 Gorontalo TP 2008/2009) Santi Mekar, Wa Ode; Paputungan, Mardjan; Ischak, Netty
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

This research is action classroom research which done at the even semester 2008/2009 academic year. The subject of the research is consisting of 30 students. Which are 7 of them are men are 23 students are women. The research divided in to two cycles that involved by one teacher as an observer. The aim of this research is to increase student achievement at the chemistry subject, salt hydrolysis material by using everyone is a teacher here strategy. The data of this research are collected by observed the teacher and the students activity while the process of teaching and learning is walking also the result of students study that collected through test. The criteria of researchs success is shown by the 80 go 90 of students 6,8, also, the observation that teacher and the students activity get 75%. The result of the research shown that the learning activity that using everyone is a teacher here strategy can increase the students achievement it can be seen by the result the students that get score more than 6, 8 or as 90%.
EFEKTIVITAS ANTIOKSIDAN PADA SISTEM EMULSI MAYONES Fatimah, Feti
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

Mayonnaise represent the system of emulsion of oil-in-water, where oil rate is 50-85%. Height of oil rate of mayonnaise causes of the oxidation reaction more easy. The aims of this research where to study the effectiveness of antioxidant on its system. The effectiveness of antioxidant in the system attributed by its polarity. The polarity of antioxidant was measured by determining of partition coefficient in octanol-water system (1:1). The effectiveness of antioxidants in the system were determined by Rancimat. Result of this research indicate that third type of antioxidants have the different polarity. The partition coefficient of butylated hydroxyl toluene (BHT) was 91%, t-butylhydroquinone (TBHQ) was 79.9%, and trollox was 0.47 (32.0%). From the Test of Rancimat known that the most effective type of antioxidants was TBHQ.
MENINGKATKAN HASILBELAJAR SISWA KELAS XI IPA 2 MAN MODEL GORONTALO PADA MATERI HIDROLISIS GARAM DENGAN MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION (GI) Rasid, Meli A.; Bialangi, Nurhayati; Alio, La
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

The research aimed to improve students achievement through Cooperative learning model of GI type in salt Hydrolysis lesson Material. It had done in students of 2008/2009 academic years that consisted of 20 students. Techniques in collecting data wereobservation sheet of teacher and students and test of students achievement. The research had to do second cycle,60% of students reached score less than 6,5. there it had to do second cycle. Second cycle was reparation of step and learning proses from first cycle.The result of second cycle showed that students achievement was improved to 95% and reached score standard more than 6,5. thereby, cooperative learning model of GI type in Salt Hydrolysis leason material can improve students achievement.
IDENTIFIKASI MASALAH PROFESIONALISME CALON GURU PADA MAHASISWA PENDIDIKAN KIMIA FMIPA UNIVERSITAS NEGERI GORONTALO Aminah, Siti; Baderan, K; Lukum, Astin; Isa, Ishak
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

This research was aimed to know the problems of the teacher professionalism that faced of Chemistry Education students to Mathematic and Natural Science Faculty of Gorontalo State University after PPL, and to know the dominant problems about teachers professionalism.The result of this research showed that the teacher professionalism problems of student were (1) teacher base competence including managing teaching learning process and class, material mastery, using media and source of learning, so assessment., (2) doing KTSP including new and same item with old curriculum, different curriculum, KTSP component, applying CTL approach and its application to schools. The dominant problems about teacher professionalism that related to teacher base competence were using media and source of learning about 66,20%, so material mastery about 59%. The dominant problems related to doing CTL including application of CTL about 64% and KTSP application to schools about 63,50%.
MENINGKATKAN AKTIVITAS SISWA KELAS XI MA AL-KHAIRAAT GORONTALO MELALUI MODEL PEMBELAJARAN KOOPERATIF TIPE BERKIRIM SALAM DAN SOAL PADA MATERI LARUTAN PENYANGGA DAN HIDROLISIS GARAM (Suatu Penelitian di Kelas XI IPA MA Al-Khairaat Gorontalo TP 2008/2009) Sari, Eka Puspita; Bialangi, Nurhayati; Ischak, Netty
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

The purpose of class action research is to increase the students activity on buffer and salt hydrolysis by using cooperative learning type sending greeting and question. The students of class XI IPA MA Al-Khairaat Gorontalo city as the subject of the research fourteen (14) people, consist five for boys and nine for girls. T6he successful qualification of this research are : (1) minimum 75 % from all the teacher activity and students that observed achieve the target, (2) minimum 80% of students thet gooten action get mark 6,5 upper with the understanding of material average 65%. Students activity in learning process is influenced by the result of students learning. Presentate average of students activity in cycle I : 27,88% get excellent, 51,07% get good, 17,86% get intermediate, 3,57% get bed. The result of students learning 71,43% with the understanding of material 64,8%. Cycle II : presentate average of students activity 68,57% get excellent, 27,14% get good, 4.,29% get intermediate, the result of students learning 85,72% and the understanding of material 80,25% Base on the data of research result, then the hypotesis of action tested the truth, namely :by using cooperative learning model type sending greeting and question in buffer and salt hydrolysis, then the students learning activity increase
PENGARUH PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD MELALUI METODE PENEMUAN TERBIMBING TERHADAP HASIL BELAJAR SISWA Abdjul, Tirtawaty
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

Jenis penelitian ini menggunakan pengembangan perangkat menurut Dick & Carey yang bertujuan untuk mendeskripsikan hasil belajar siswa setelah pembelajaran yang menggunakan model pembelajaran kooperatif tipe STAD melalui metode penemuan terbimbing. Subyek penelitian adalah siswa kelas 2 SMP Negeri 7 Gorontalo dengan jumlah siswa 140 orang dan M.Ts Muhammadiyah Kota Gorontalo dengan jumlah siswa 28 orang dengan rancangan Control group pre-test post-test. Hasil analisis data menunjukkan bahwa pada kelas eksperimen pengelolaan pembelajaran dapat dilaksanakan dengan baik, peningkatan hasil belajar siswa pada kelas eksperimen 1 (77%); kelas eksperimen 2 (75%) dan kelas eksperimen 3 (76%), aktivitas belajar berpusat pada siswa, dan respon siswa berkategori baik (89,78%), dibandingkan dengan kelas kontrol pengelolaan pembelajaran tidak dapat dilaksanakan dengan baik, hasil belajar siswa pada kelas kontrol 1 (59%); kelas kontrol 2 (57%) dan kelas kontrol 3 (58%), aktivitas belajar berpusat pada guru dan respon siswa (26,67%). Berdasarkan temuan-temuan tersebut di atas, dapat disimpulkan bahwa model pembelajaran kooperatif tipe STAD melalui metode penemuan terbimbing pada pokok bahasan cahaya dapat berpengaruh secara signifikan terhadap kenaikan hasil belajar siswa.
MENINGKATKAN HASIL BELAJAR SISWA KELAS X1 SMU MUHAMMADIAH BATUDAA PADA MATERI STRUKTUR ATOM MELALUI STRATEGI QUESTION STUDENT HAVE Idrus, Selvian; Isa, Ishak; Ischak, Netty Ino
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

This research involved X1 Grade students of SMA Muhammadiyah Batudaa with total number of students were 21 students. It consist of 9 male students and 12 female students of 2008/2009 academic years. Technique in collecting the data was observation. This research was a classroom action research and it was done during one semester as two cycles. The observation result of teacher activity in first cycle got excellent criteria as 72, 72 and good criteria as 27,27. While in second cycle, it was improved as 36 % reached excellent criteria and 64 % reached good criteria. Besides that, observation result of students in first cycle is students who got an excellent criteria was 57,13 % and good criteria was 42,85% while in second cycle it was improved, that is students who got an excellent criteria was 29% and good criteria was 71%. Students achievement in first cycle were 13 students or 61,905 got score more, than 6,9 and 8 students or 38,09% got score less than 6,9. while the students achievement in second cycle was improved. It was 18 students or 85,71% got score more than 6,9 and 3 student got score less than 6,9 with classical absorption was 71,42%.Based on that result above, the applications of question student have strategy in atom structure lesson can improve student achievement. There fore, the hypothesis in this research can be accepted.
PENDEKATAN SETS (SCIENCE, ENVIRONMENT, TECHNOLOGY, AND SOCIETY) DALAM PEMBELAJARAN REDOKS PADA SISWA KELAS X MADRASAH ALIYAH NEGERI LIMBOTO Umar, Lisdawati N.; Isa, Ishak; Bialangi, Nurhayati
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

The research is experiment research that aimed to prove the different of students achievement that was taught by using SETS approach and by conventional significantly at MAN Limbotos students. The population were students of XA class, XB class and XC class of MAN Limboto in 2008/2009 academics years that consisted of 86 students. The sample was students of XA class and XC class that consisted of 50 students. The sample was taken by using Cluster Random Sampling technique. The instruments in collecting the data was essay test that validity and reliability had tested before. Method of data analyses were normality test, homogenity test and hypothesis test. At hypothesis test, it got tcount = 2.322, while ttable = 1,711. The result showed that students achievement that was taught by using SETS approach is better than students achievement that was taught by using conventional in Oxidation and Reduction Reaction lesson.
MENINGKATKAN HASIL BELAJAR SISWA KELAS XA MADRASAH ALIYAH ALKHAIRAAT KOTA GORONTALO PADA MATERI REAKSI REDOKS DENGAN METODE KOOPERATIF TIPE NHT Junus, Abdul Gias; Pikoli, Masrid; Suleman, Nita
Jurnal Entropi Vol 5, No 1, 2009
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Abstract

Student result of learning was still in the lower category. It must be solving. The way of how to solve the probem by applying cooperative learning method which type of Numbered Heads Together (NHT). The aim of this research is to improve student result of learning for the redoks material which applying cooperative learning method Numbered Heads Together (NHT) type. Sampel of the research is students on the tenth grade (XA) of MA Alkhairaat Gorontalo, in the 2008/2009 academic years. The sample consists of 18 students. This research was done/into the two cycles by involved a teacher partner as an observer. The criterion efficacy in this research is 85% student get ? 6,5 and observation toward the teacher and student activity get 75%. Based on this data, the result shows that cooperative learning method Numbered Heads Together (NHT) type can improve students result of learning by seeing students learning improvement which get mark more than 6,5 is 89%.

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