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All Journal JPPIPA (Jurnal Penelitian Pendidikan IPA) Nukleo Sains: Jurnal Pendidikan IPA
Icha Kurnia Wati
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Humanities Education Languange, Linguistic, Communication & Media Social Sciences

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EFFECTIVENESS OF STEM-BASED DISCOVERY LEARNING MODEL TO IMPROVE CRITICAL THINKING SKILLS OF JUNIOR HIGH SCHOOL STUDENTS Widdya Asmara Dewi; Nurma Yunita Indriyanti; Icha Kurnia Wati
NUKLEO SAINS : JURNAL PENDIDIKAN IPA Vol. 4 No. 2 (2025): NUKLEO SAINS
Publisher : Program Studi Pendidikan IPA FIP Universitas Hasyim Asy'ari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33752/ns.v4i2.9417

Abstract

This research aims to (1) to determine the effectiveness of the discovery learning model based on the STEM approach on the critical thinking skills of junior high school students in grade VII on the Solar System material, and (2) to analyze the discovery learning model based on the STEM approach in improving the critical thinking skills of junior high school students. The design of this study uses mixed methods simultaneously. The discovery learning model Based on the STEM Approach is applied to the experimental class and the discovery learning model is applied to the control class. Data collection was carried out by critical thinking skills tests and non-tests in the form of observations and interviews. The data analysis technique used in this study uses normality and homogeneity tests. The hypothesis was tested using an independent sample t test using N-Gain%.  The results showed that there was a difference in the average increase in the pretest and posttest scores of students' critical thinking skills in the Solar System material by using the N-Gain% test in the control class by 18.69% and the experimental class by 34.47%. From the results of the independent t-test hypothesis test using NGain% with the help of the SPSS 32 application, the value of sig 2 tailed was obtained as 0.003 <0.05 and t calculated > t table (3.063 > 2.988), then it can be decided that H1 is accepted. Therefore, it can be concluded that the discovery learning model based on the STEM approach has a positive effect on improving the critical thinking skills of junior high school students.
THE RESULT OF VALIDATION TESTING AND STUDENTS RESPONSE TO GEOSCIENCE STUDENTS WORKSHEETS TO IMPROVE STUDENT SCIENTIFIC WORK AND CONCEPTUAL MASTERY Febriani Sarwendah; Meida Wulan Sari; Icha Kurnia Wati
JPPIPA (Jurnal Penelitian Pendidikan IPA) Vol. 6 No. 1 (2021): Juni 2021
Publisher : Universitas Negeri Surabaya in collaboration with Perkumpulan Pendidik IPA Indonesia (PPII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jppipa.v6n1.p11-16

Abstract

Geoscience is a study of earth, it is easy to find around everyday students ;ife. The aim of this research is to develop Geoscience Students Worksheets based on scientific work to enhance students scientific work and conceptual mastery also to test the validity of the Geoscience Students Wroksheets through experts appraisal and students response. This reasearch is R & D research using 4D model until Develop stage. Data collection techniques including survey and interview technique. The question in the questionnaire consists on closed ended and open ended, the close ended question it to measure the validity and students response while open ended question for obtaining suggestions from all experts and students. Moreover, interview conducted during preliminary study. There are two validators in this research, they are content and learning media expert with Science Education educational background. In addition, ten students respondents in this research are already took the Geoscience Course last year. Quantitative data was analyzed by comparing the score with certain criteria and qualitative data was analyzed with finding common topics. Validation result and students respon results show that Geoscience Students Worksheets is very valid with score from content expert, learning media expert, and students consecutively  90,01%, 85,70%, and 89,4%.
Co-Authors Febriani Sarwendah Febriani Sarwendah Asri Nugraheni Maridi Maridi Meida Wulan Sari Murni Ramli Nurma Yunita Indriyanti S. Suciati Widdya Asmara Dewi