Research Significances Operational Definition

4. Worksheet media is one of learning media used in the learning process. Worksheet is able to present the teaching materials are accompanied by exercises and evaluations that much.

CHAPTER V CONCLUSIONS AND SUGGESTIONS

5.1 Conclusion

The objectives of this research had been transformed to be problem statement which were then hypothesized. Based on the data analysis researcher concludes that: 1. Students’ achievement of the class taught by using POGIL strategy with worksheet media based on lesson study on teaching colloidal system has higher significant difference compared to the class taught by using using direct instruction method in all of schools, where where the highest is at SMAN 3 Medan 0.86±0.09 and the lowest is at SMAN 2 Medan 0.71±0.13. 2. Students’ interest of the class taugh by using POGIL strategy with worksheet media based on lesson study on teaching colloidal system has higher significant difference compared to the class taught by using using direct instruction method in all of schools,where the highest are at SMA N 3 Medan 82,96 and SMA Swasta Raksana 80,25. 3. There is a positive and significant correlation between students’ interest to students’ achievement in both of class at all of schools.

5.2 Suggestion

Based on the data analysis, researcher suggests that: 1. The prospective teachers can use this research as a reference for doing the similar researches in order to increase students’ achievement and interest either by applying appropriate learning model or using appropriate learning media. 2. The next researchers who will conduct could include additional variables which may give contribution to students’ achievement and interest such as examining the implementation of POGIL strategy based on lesson study with worksheet media, virtual lab, video animation, etc. REFERENCES Achsin, A., 2009, Media Pembelajaran, Rajawali Pers, Jakarta Anderson,R.H., 1994, Pemilihan dan Pengembangan Media Untuk Pembelajaran, Rajawali Pers, Jakarta Arifin,2003, Pembangunan Program Pengajaran Bidang Studi Kimia, Airlangga University Press, Surabaya Arikunto, 2012, Dasar-Dasar Evaluasi Pendidikan, Penerbit Bumi Aksara, Jakarta Arsyad, A., 2011, Media Pembelajaran, Rajawali Pers, Jakarta Aunurrahman, 2010, Belajar dan Pembelajaran, Penerbit Alfabeta, Bandung Butar-Butar, R.,2007, Pengaruh Penggunaan Program Animasi Komputer Terhadap Motivasi dan Hasil Belajar Kimia Siswa SMA Negeri di Kota Sibolga, Tesis, Program Pascasarjana UNIMED, Medan Celikler, D., and Aksan, Z., 2012, The Effect of the Use of Worksheets about Aqueous Solution on Pre-service Elementary Science Teachers’ Academic Success, Social and Behavioral Sciences 46:4611-4614 Dimyati, M., 2006, Belajar dan Pembelajaran. PT Rineka Cipta, Jakarta Doig, B., and Groves, S., 2011, Japanese Lesson Study: Teacher Professional Development through Communities of Inquiry, Mathematics Teacher Education and Development 131:77-93 Douglas, E.P., and Chiu C.C., 2012, Process-oriented Guided Inquiry Learning in Engineering, Social and Behavioral Science 56:253- 257

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