Nurhayati, Elis
Universitas Syiah Kuala

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Pengembangan Bahan Ajar Materi Garis Istimewa pada Segitiga dengan Pendekatan Problem Posing berbantuan Geogebra Nurhayati, Elis; Nengsih, Winda; Rohaeti, Euis Eti; Herdiman, Indri
Didaktik Matematika Vol 5, No 1 (2018): Jurnal Didaktik Matematika
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.118 KB) | DOI: 10.24815/jdm.v5i1.10073

Abstract

This study is a developmental research aiming to produce Geogebra-assisted teaching and learning materials through Problem Posing for topic of Line Special in Triangle at year 7. This study uses Thiagarajan’s model of developmental research, without disseminate stage. The learning materials developed in this study were lesson plans and student worksheets. The subjects of this study were grade seven students at a private school in Cianjur Regency. In total, 13 male and 15 female students participated in this study. The results of this study show that (1) based validators’ review, the research instruments developed in this were very valid and practical, (2) based on students’ response, teaching materials fulfilled the practical category, and (3) based on the implementation in the classroom, student worksheets satisfied the effective category.
PENERAPAN TEKNIK PROBING-PROMPTING DALAM PEMBELAJARAN MATEMATIKA SISWA KELAS X SMK TI GARUDA NUSANTARA CIMAHI Nurhayati, Elis
Journal on Education Vol 1 No 2 (2018): Journal On Education
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (693.148 KB)

Abstract

The  ability  of   understanding is  the  important  ability  in  the  science  development.  The  ability  of mathematical  communication  is  expected  can  increase  simultaneously  by  the  development  of  the  science  and technology. Nevertheless, the implementation of mathematical learning still focuses to the teacher, this method makes students cannot develop their ability in mathematical communication. Their report study in mathematics is still under minimum completeness criteria (KKM), namely 75. One of the recommended effort to deal with this condition is the using probing-prompting technique. The aim of this research is knowing the impact of the enhancement of student’s ability  in  mathematical  understanding  using  probing-prompting  technique  rather  than  are  compared  with project base learning learning technique. The result of this research show that student’s ability of mathematical communication using  probing-prompting technique is  better than  technique with  α  = 0,05. To  conclude, probing-prompting technique can increase student is ability in mathematical understanding
Perendaman Asam Askorbat Dapat Memperbaiki Sifat Fisik, Kimia, Sensori, dan Umur Simpan Tepung Bekatul Fungsional (Ascorbic Acid Soaking Can Improve Physical, Chemical, Sensory Characteristics and Storage Time of Functional Rice Bran) Astawan, Made; Riyadi, Hadi; Nurhayati, Elis
JURNAL PANGAN Vol 22, No 1 (2013): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (880.774 KB) | DOI: 10.33964/jp.v22i1.77

Abstract

Tujuan dari penelitian ini adalah menganalisis kombinasi pengaruh perendaman bekatul pada berbagai konsentrasi asam askorbat (400, 700, 1000 ppm) dan lama waktu perendaman (1, 2, 3 jam) terhadap sifat fisik, sifat kimia, pertumbuhan mikroba, perubahan mutu selama penyimpanan, umur simpan, dan daya terima bekatul fungsional. Kombinasi perlakuan perendaman bekatul dengan asam askorbat 1000 ppm selama 1 jam, menghasilkan bekatul fungsional yang terbaik. Perlakuan tersebut secara nyata meningkatkan sifat fisik (kecerahan, derajat putih, densitas kamba, densitas padat, dan indeks penyerapan air), sifat kimia (karbohidrat dan serat pangan, vitamin C), umur simpan dan daya terima. Perlakuan yang sama secara nyata menurunkan sifat fisik (rendemen dan aw), sifat kimia (kadar air dan abu, pH, TBA), dan total mikroba. Produk terpilih tersebut memiliki umur simpan selama 70,04 minggu, jauh lebih baik dibandingkan umur simpan bekatul konvensional selama 3,38 minggu pada penyimpanan suhu kamar, sehingga terjadi peningkatan sebesar 103 persen. Hasil uji sensoris menunjukkan bekatul fungsional lebih disukai dibandingkan bekatul konvensional, yaitu dalam hal kecerahan, warna, aroma, dan penampakan secara keseluruhan.The objective of this research was to analyze the combination effect of ascorbic acid concentration (400, 700, 1000 ppm) andsoaking time (1, 2, 3 hour) on physical and chemical characteristics, microbial growth, quality changes during storage, shelf life, and sensory acceptance of functional rice bran. The combination of soaking treatment with 1,000 ppm ascorbic acid solution for 1 hour produced the best functional rice bran. That treatment significantly increased physical characteristics (lightness, whiteness, bulk density, oliddensity, andwater absorption index), chemical characteristics (carbohydrate, dietary fiber, and vitamin C), shelf life and consumeracceptance. The same treatment on the otherhand significantly decreased physical characteristics (yield and water activity), chemical characteristics (moisture and ash contents, pH, TBA), andtotal microbial growth. The chosen functional rice bran had 70.04 weeksof shelf life, better than 34.48 weeks of conventional rice bran shelf life at room temperature, increased by 103 percent. Sensory analysis showed that functional rice bran hadbetter acceptance than conventional rice bran, in term of lightness, color, flavor, and overall appearance. 
Penerapan scaffolding untuk pencapaian kemandirian belajar siswa Nurhayati, Elis
JP3M (Jurnal Penelitian Pendidikan dan Pengajaran Matematika) Vol 3, No 1 (2017)
Publisher : Program Studi Pendidikan Matematika, FKIP, Universitas Siliwangi, Tasikmalaya

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Abstract

The purpose of this study was to analyse the achievement of student learning independence through scaffolding application. This study was a quasi-experimental research with involving two classes using purposive sampling. The population in this study was the student of class VIII in one of the public junior high school in Tasikmalaya district involving two classes as the sample. The data collection technique used was non-test. The test instrument according to the indicator the ability while the non-test by questionnaire. The data analyse performance Method of Successive Interval. The research result showed that ability of the student who gets scaffolding learning is higher than the student who gets direct learning, the student learning independence of student who gets scaffolding learning is better than students who get direct learning, and the student learning independence of student who gets scaffolding is in the high category.