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All Journal E-Journal Home Economic and Tourism SPEKTRUM: Jurnal Pendidikan Luar Sekolah (PLS)
Pertiwi, Rahmi
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Economics, Econometrics & Finance Education Other

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PENGARUH SUBSTITUSI KULIT SEMANGKA TERHADAP KUALITAS ES KRIM Pertiwi, Rahmi; Syarif, Wirnelis; Holinesti, Rahmi
Journal of Home Economics and Tourism Vol 15, No 2 (2017): Periode September 2017
Publisher : Faculty of Tourism and Hospitality - Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.713 KB)

Abstract

The background of this study was the lack of utilization of watermelon peel onvariation of foods because it was considered not beneficial, so it became unuseblewaste, whereas watermelon peel has nutritional content and was a potential source ofpectin that can prevent ice cream quickly melted. The purpose of this research was toanalyzed substitution effect of watermelon peel as much as 10%, 15% and 20% tothe quality of color, aroma, texture and taste of ice cream. This type of research waspurely experimental with a completely randomized design method. The data usedwere primary data sourced from 30 semi-trained panelists by proposed theorganoleptic test format. Analyzed of data using ANAVA, if Fcount> Ftable thencontinued with Duncan test. The result of the research showed that there was asignificant influence of watermelon peel substitution on ice cream quality as much as20% produced the best quality, covering aroma (watermelon peel), texture (smooth),texture (not crystalized) and texture (not easy to melted).Keywords: Watermelon peel, Ice Cream, Quality
Development of Vocabulary Cards as Learning Media to Improve the English Vocabulary of Fourth Grade Elementary School Students Andriani, Cesilia; Novrianti, Novrianti; Pertiwi, rahmi; Masnur, Alkadri
SPEKTRUM: Jurnal Pendidikan Luar Sekolah (PLS) Vol 13, No 3 (2025): SPEKTRUM: Jurnal Pendidikan Luar Sekolah (PLS): Publishing August 2025
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/spektrumpls.v13i3.135176

Abstract

The purpose of this research was to develop vocabulary card learning media to improve the English vocabulary mastery of fourth-grade elementary school students. This study was motivated by the limited availability of engaging visual learning media in elementary schools, accompanied by students’ low English vocabulary mastery. This development aimed to describe and present an overview of vocabulary card learning media as an alternative instructional tool, as well as to determine the validity and practicality levels of the developed product.This research employed a Research and Development (R&D) approach using the 4D development model, which consists of the Define, Design, Develop, and Disseminate stages. The development stage served as the benchmark for the success of the media, as it involved expert assessments through validity tests and product trials for practicality testing. The validity tests consisted of two phases: the media and linguistic validity tests conducted by media and language experts, and the content validity test conducted by the fourth-grade homeroom teacher of SD IT Baitul Hamdi. After the validity tests, a practicality test was conducted with the fourth-grade students of SD IT Baitul Hamdi.The vocabulary card learning media, covering the topics It’s Seven O’Clock, Daily Activities, and This Is My Bicycle, obtained a “very valid” rating in the first media and linguistic validity test with an average score of 4.57 from two validators and was declared feasible with revisions. In the second validity test, the media achieved an overall “very valid” score of 4.97 and was deemed suitable for field testing without revisions. The content validity test achieved a “very valid” result with an average score of 4.89, while the practicality test yielded a “very practical” result with an overall average of 4.55. Based on the validity and practicality results, it can be concluded that the vocabulary card learning media is ready to be implemented and is practical for use in the teaching and learning process. The disseminate stage was carried out by distributing the product to the Teacher Working Group (KKG) of Cluster 6, which consists of representatives from nine elementary schools in the research area through a representative teacher from SD IT Baitul Hamdi, with the handover proven by an official handover letter.
Co-Authors Alkadri Masnur Andriani, Cesilia Novrianti Rahmi Holinesti Wirnelis Syarif