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All Journal JPF : JURNAL PENDIDIKAN FISIKA JIPI (Jurnal IPA dan Pembelajaran IPA)
Desa, Susilo Sudarman
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Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Physics

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The Effect of Scientific Literacy Approach with Discovery Learning Model toward Physics Concepts Understanding Saputra, I Gede Purwana Edi; Sukariasih, Luh; Nursalam, La Ode; Desa, Susilo Sudarman
Jurnal Pendidikan Fisika Vol. 10 No. 2 (2022): PENDIDIKAN FISIKA
Publisher : Universitas Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26618/jpf.v10i2.7769

Abstract

Scientific literacy is essential in our modern society today due to many problems related to science and technology. This study aims to determine the effect of the scientific literacy approach using the discovery learning model on students' understanding of physics concepts. The method of this research is a true experimental research using post-tests only control group design. This research was conducted at SMA Negeri 1 Watubangga. The sample of this study consisted of two classes, namely the experimental class, which was taught with scientific literacy approach using the discovery learning model, and the control class which was taught by using the direct learning model. Sampling was carried out using a random sampling technique so that class X1 was chosen as the experimental class and X2 as the control class. The data analysis technique used was descriptive and inferential analysis. The results showed that students' understanding of physics concepts in the experimental class is in a good category while in the control class is in the medium category. The inferential test shows t-count > t-table (6.85 > 1.98). This means that there is a significant difference in understanding of physics concept between the experimental and control group. This study concludes that the use of a scientific literacy approach with a discovery learning model has an effect on students' understanding of physics concepts.
Organoleptic Study of Red Dragon Fruit Jam (Hylocereus polyrhizus) from the Perspective of Statistics and Food Chemistry Lestari*, Mega Fia; Utami, Hermin Hardyanti; Yusriadi, Yusriadi; Desa, Susilo Sudarman
Jurnal IPA & Pembelajaran IPA Vol 9, No 3 (2025): SEPTEMBER 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v9i3.47987

Abstract

Red dragon fruit (Hylocereus polyrhizus) based jam products have high potential, but consumer acceptance is still limited due to sensory constraints that arise when dragon fruit skin is used as an additional ingredient. This study aimed to evaluate the sensory quality of red dragon fruit jam by adding dragon fruit peel, using statistical and food chemistry approaches. Organoleptic tests were conducted on 30 untrained panellists to assess four main attributes: colour, texture, odour, and taste, using a 9-point hedonic scale. Data were analyzed using descriptive statistics, the Shapiro-Wilk normality test, the one-sample t-test, and cronbach's alpha reliability test. The results showed that colour and texture were not significantly different from the "like" threshold value ( = 7), while odour and taste showed significant differences (p 0.05). Cronbachs alpha value of 0.673 indicated moderate consistency of assessment. The food chemistry perspective explain that the less preferred odour and taste attributes are thought to be caused by secondary metabolite compounds such as tannins in dragon fruit peel, which can produce a bitter sensation or foreign odour. Approaches such as blanching and formulation adjustments can be strategies to improve sensory quality. This study contributes to developing innovative and sustainable dragon fruit-based food products
Co-Authors La Ode Nursalam, La Ode Mega Fia Lestari Saputra, I Gede Purwana Edi Sukariasih, Luh Utami, Hermin Hardyanti Yusriadi Yusriadi