Application of Cooperative Learning Model Type Teams Games Tournament (TGT) with Demonstration Based to Improve the Learning Outcomes of Colloid Topic in Student Class XI SMA Negeri 7 Palu

This study aimed to obtain a description of implementation on student’s learning outcomes the application of cooperative learning model of TGT based on demonstration Class XI on colloid material in SMA Negeri 7 Palu. The type of research used in this research was pre-experimental designs (non-designs) with research design that was one-group pre-test post-test design. Sampling in this study was chosen by purposive sampling. The sample consisted of two classes, class XI IPA 1 as experimental class 1 (n = 28) and class XI IPA 2 as experiment class 2 (n = 29). Student learning outcomes were processed using inferential statistical analysis of the Wilcoxon Rank-Unparpulated Ranking nonparametric test. The results showed that the experimental class 1 was Zcount (-4.62) <Ztable (-1.96) and experiment 2 was Zcount (-4.70) <Ztable (-1.96). The effectiveness of the implementation of learning model of TGT based on demonstration to words student learning outcomes can also be seen from the assessment of student learning outcomes with the average posttest score for experimental class 1 was 83.29 and experiment class 2 was 80.86 with the result of N-gain calculation for both experiment class included in high category that was equal to 0.83 and 0.85. So it can be concluded that the implementation of learning model of TGT based on demonstration can improve student learning outcomes with average greater than 75 on colloid material in SMA 7 Palu.

Implementation of Problem Based Learning (PBL) Model toward Students’ Learning Outcomes in the Class XI IPA on Colloid Material at SMA Negeri 9 Palu

Problem-based learning (PBL) is a learning model where students learn through practical problems related to the real life. The students conducted to solve the problems solving being discussed through a series of learning systematically. This study aimed to improve the learning outcomes of students in the class XI IPA through the implementation of PBL model on colloid material at SMA Negeri 9 Palu. This study was pre-experimental research with one group pretest-posttest design. This study was conducted by using one group observed at the pretest stage and then continued with posttest to the students of class XI IPA 1 as experiment 1 (n = 26) and students of class XI IPA 2 as experiment 2 (n = 25). The data was analyzed using descriptive statistics by calculating of N-Gain Index. The results showed that the implementation of PBL learning model improved students’ learning outcomes in the class XI IPA on colloid material at SMA Negeri 9 Palu.

PENGEMBANGAN MEDIA WHEELS QUESTION PADA MATERI SISTEM KOLOID UNTUK MENINGKATKAN MOTIVASI BELAJAR SISWA KELAS XI DI SMA NEGERI 12 BANJARMASIN

Koloid merupakan salah satu materi kimia yang cukup sulit dan cenderung hafalan. Materi koloid memiliki subpokok bahasan yang cukup luas untuk dipelajari dan dipahami, sehingga membuat kurangnya motivasi belajar siswa dalam mengikuti pembelajaran kimia. Pada penelitian ini peneliti tertarik untuk mengembangkan media wheels question yang dapat meningkatkan motivasi belajar siswa pada materi sistem koloid. Jenis penelitian yang digunakan adalah penelitian pengembangan denganmetode Research and Development (R&D) dengan menggunakan langkah 1 sampai langkah 6. Populasi yang digunakan adalah kelas XI IPA SMAN 12 Banjarmasin dengan sampel kelas XI IPA 3 yang berjumlah 25 orang siswa. Selain menguji kelayakan media, penelitian ini juga menguji efektivitas media terhadap motivasi belajar. Hasil penelitian pengembangan media wheels question ditinjau dari analisi kelayakan media wheels question memperoleh penilian sebesar 64 berada pada rentang X > 63 sehingga termasuk kedalam kategori sangat baik dan peningkatan motivasi belajar siswa sebesar 43 %.Colloid is a chemical material that is quite difficult and tends to memorize. Colloid material has a fairly broad sub-topic to be studied and understood, thus making students lack of learning motivation in taking chemistry learning. In this study, researchers are interested in developing the wheels question media that can improve students’ learning motivation in the colloidal system material. The type of research used is development research with Research and Development (R&D)method using stes 1 through step 6. The population used is class XI science at SMAN 12 Banjarmasin with a sample of class XI IPA 3 totaling 25 student. In addition to determine the feasibility of media, this study also determine the effectiveness of media to learning motivation. The results of the wheels question media develoment research were reviewed from the feasibility analysis of wheels question media obtained a score of 64 in the range X > 63 so that it was included in the excellent category and an increase in student learning motivation by 34%.

ANALYSIS INHIBITING FACTOR OF STUDENTS COMMUNICATION SKILL THROUGH IMPLEMENTATION OF NHT ON COLLOID MATERIAL

This study was aimed to know the inhibiting factor of student communication skill in colloid material with application of Numbered Head Together model. The method of this research is descriptive quantitative and target are student of class XI IPA 2 SMAN Wonoayu Sidoarjo and XI IPA 5 SMA Al-Islam Krian with amount of 39 and 45 students. Result of this researchwas found that 41.03% of students of IPA 2 SMAN Wonoayu and 42.2% of students of XI IPA 5 SMA AL Islam Krian included communication delay. The results of data analysis showed that in XI IPA 2 SMAN Wonoayu Sidoarjo as much as 75% of student experience communication delays on ecological and psychological factors; 43.7% by the messaging and semantic factors. While in XI IPA 5 SMA Al Islam Krian 73.7% by psychological factors; 68% by ecological factors; 47.4% by messenger factors, and 42.1% by receiver and semantic factors.

ANALYSIS INHIBITING FACTOR OF STUDENTS COMMUNICATION SKILL THROUGH IMPLEMENTATION OF NHT ON COLLOID MATERIAL

This study was aimed to know the inhibiting factor of student communication skill in colloid material with application of Numbered Head Together model. The method of this research is descriptive quantitative and target are student of class XI IPA 2 SMAN Wonoayu Sidoarjo and XI IPA 5 SMA Al-Islam Krian with amount of 39 and 45 students. Result of this researchwas found that 41.03% of students of IPA 2 SMAN Wonoayu and 42.2% of students of XI IPA 5 SMA AL Islam Krian included communication delay. The results of data analysis showed that in XI IPA 2 SMAN Wonoayu Sidoarjo as much as 75% of student experience communication delays on ecological and psychological factors; 43.7% by the messaging and semantic factors. While in XI IPA 5 SMA Al Islam Krian 73.7% by psychological factors; 68% by ecological factors; 47.4% by messenger factors, and 42.1% by receiver and semantic factors