The Effect Of Group Investigation and Learning Cycle Models Towards Students Science Process Skill On Environmental Pollution Topics For Grade VII Students MTs Nurul Huda Medan Academic Year 2016/2017

Irma Handayani Saragih, Tumiur Gultom(Perdana University), Fauziyah Harahap(State University of Medan)
Proceedings of the 3rd Annual International Seminar on Transformative Education and Educational Leadership (AISTEEL 2018)
January 1, 2018
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