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Yenni Khairani Lubis
Universitas Islam Negeri Syekh Ali Hasan Ahmad Addary Padangsidimpuan
Education Physics Other

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Physical Environment And Sustainable Development Aminah Harahap; Yenni Khairani Lubis
Gravity Journal Vol 4, No 2 (2025)
Publisher : Institut Agama Islam Negeri Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24952/gravity.v4i2.19210

Abstract

Physical environment plays a strategic role in supporting sustainable development. Increasingenvironmental damage, such as climate change, pollution, and exploitation of natural resources, shows that development that does not consider environmental aspects will have a serious impact on human life. Therefore, Physical environment is an important instrument for shaping public awareness, knowledge, attitudes, and behavior to be more responsible towards the environment. This study aims to examine the concept of Physical environment and its relationship with sustainable development through a literature review approach. Data were obtained from various sources, including books, national and international scientific journals, and official documents from relevant institutions. The results of the study show that Physical environment plays a role in instilling values of sustainability, increasing environmental literacy, and encouraging community participation in maintaining a balance between social, economic, and environmental factors. Therefore, a key step towards achieving sustainable development is to integrate Physical environmentinto formal and informal physics institutions.
Peningkatkan Pemahaman Konsep Fisika Melalui Penerapan Model Problem Based Learning Berbantu LKPD Muhammad Taufik Sibagariang; Almira Amir; Yenni Khairani Lubis
Gravity Journal Vol 4, No 2 (2025)
Publisher : Institut Agama Islam Negeri Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24952/gravity.v4i2.19435

Abstract

This study was conducted to improve the understanding of physics concepts of grade XI-7 students of SMA Negeri 2 Sibolga through the application of the problem based learning (PBL) learning model supported by the use of student waorksheets (LKPD) on static flui material. This study applied th classroom action research (CAR) method which was carried out in two cycles. Each cycle consisted of the stage of planning, action implementation, observation sheets and test to measure conceptual understanding. The results of the study showed a gradual increase in the level of learning completion, namely from 13% in the pre-cycle I, 61.29% in the first meeting of cycle II, and reaching 82% in the second meeting of cycle II with an average value above 75. This finding proves that the use of the PBL model assisted by LKPD is able to significantly increase student’s activeness, involvement, and understanding of physics concepts when compared to conventional learning
Peningkatan Kemampuan Berfikir Kritis pada Siswa terhadap Konsep Fisika Kesetimbangan Benda Tegar Menggunakan Model Discovery Learning Yenni Khairani Lubis; Tika Rahmadani Dalimunthe
Gravity Journal Vol 4, No 1 (2025)
Publisher : Institut Agama Islam Negeri Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24952/gravity.v4i1.16596

Abstract

The learning approach in the classroom has a significant impact on the success of the educational process, so teachers need to choose the right strategy so that students are more motivated to be involved in learning. In this way, students can participate actively and optimize their critical thinking skills, one of which is through implementing the discovery learning model. However, is the application of this model effective in improving students' critical thinking skills in class XI IPA 1 SMA N 1 Siabu? This research aims to identify an increase in students' critical thinking skills through the application of the discovery learning model. This research uses a classroom action research (PTK) approach with a combination of quantitative and qualitative methods. Quantitative methods are used to measure the impact of applying the discovery learning model on critical thinking skills on the topic of equilibrium dynamics of rigid bodies, while qualitative methods are used to outline the learning implications of this research. The research subjects were 33 students of class XI IPA 1 SMA N 1 Siabu, consisting of 19 female students and 14 male students. The success indicator is determined if 75% of the total students achieve learning completion. The research results showed that student activities in cycle I were in the quite good category, and in cycle II they increased to good category. The percentage of classical completion of students' critical thinking ability test results increased from 18.1% in the pre-cycle to 36.3% in the first cycle of the first meeting, 51.5% in the second meeting, and 78.8% in the second cycle. Thus, the application of the discovery learning model has proven to be effective in improving students' critical thinking skills in class XI IPA 1 SMA N 1 Siabu Mandailing Natal.
Co-Authors Almira Amir Aminah Harahap Muhammad Taufik Sibagariang Tika Rahmadani Dalimunthe