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All Journal PRISMA FISIKA Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan
Maysharoh, Siti
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Earth & Planetary Sciences Education Physics Other

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PENGEMBANGAN PERANGKAT PEMBELAJARAN PADA MATERI SISTEM PEREDARAN DARAH MEMANFAATKAN E-LEARNING BERBASIS EDMODO UNTUK MENINGKATKAN MOTIVASI BELAJAR SISWA KELAS XI Maysharoh, Siti; Natalina L, Mariani; Febrita, Elya
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 5, No 1 (2018): WISUDA APRIL 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstract : The aim of this research is to develop learning media with good quality in the circulatory system material utilizing e-learning based on edmodo to improve students learning motivation in XI class. Further, e-learning validity test based on edmodo as learning media. The research was conducted in campus of Biology Education Program of FKIP Universitas Riau, it start from June to October 2017 by using Research and Development (R&D) approach with ADDIE model. This research is only in the Development stage. Learning media that has been developed is in circulatory system meterial. The instrument has been used is edmodo based e-learning validation sheet that containing 24 questions and was filled by 5 validators. Furthermore, it was conducted first test to 13 students biology education semester 1 and second test to 19 students of grade XII SMA Negeri 1 Pekanbaru by using questionnaire of student response. Research data were analyzed using descriptive statistical analysis. The result of edmodo based e-learning validation on the circulation system material is seen from 4 aspects, display, program, learning and curriculum. The result of validation is strong valid with score 3.86. The results of the first trial on students are in very good category for media and LTPD are 100% and 92.3% respectively. The second trial result of the students was in very good category on media and LTPD were 95% and 50% respectively. The result of questionnaire of motivation to learn is in good category in trial I is 3.30 or as much as 82.40% and trial II is 3.24 or as much as 80.97%. Learning tools developed can be used as an alternative learning tool and to improve student motivation of class XI.Keywords: Edmodo Based E-Learning, Learning Tool, Questionnaire response, Validation Sheet.
Karakterisasi Pola Distribusi Pori Karbon Aktif Tandan Kosong Kelapa Sawit Teraktivasi H3PO4 Berbasis Geometri Fraktal Maysharoh, Siti; Faryuni, Irfana Diah; Sampurno, Joko
PRISMA FISIKA Vol 6, No 1 (2018)
Publisher : Jurusan Fisika, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1182.451 KB) | DOI: 10.26418/pf.v6i1.23592

Abstract

Penelitian ini mengkaji tentang analisa citra SEM karbon aktif tandan kosong kelapa sawit menggunakan metode fraktal untuk menganalisis pola distribusi pori pada karbon aktif. Karbon aktif disintesis dari tandan kosong kelapa sawit menggunakan larutan H3PO4 (asam fosfat). Sintesis diawali dengan proses karbonisasi pada suhu 400˚C selama satu jam, dilanjutkan dengan aktivasi kimia menggunakan larutan H3PO4 yang bervariasi: 5%, 10%, 15%, 20% dan 25%, kemudian diaktivasi fisika pada suhu 700˚C selama satu jam. Karbon aktif selanjutnya dikarakterisasi menggunakan SEM (Scanning Electron Microscopy). Citra SEM karbon aktif dikarakterisasi dengan analisis fraktal metode box-counting untuk mendapatkan dimensi fraktalnya. Pengolahan citra SEM dimulai dengan mengubah citra menjadi grayscale, dilanjutkan dengan proses thresholding dan diakhiri dengan proses deteksi tepi citra. Hasil penelitian menunjukkan bahwa semakin tinggi konsentrasi aktivator H3PO4 yang diberikan (5% hingga 25%) menyebabkan ukuran pori karbon aktif semakin besar pula, namun jumlah pori tersebut semakin menurun sehingga distribusi porinya menjadi lebih teratur. Hal tersebut ditandai dengan menurunnya dimensi fraktal seiring dengan penambahan konsentrasi H3PO4. Kata kunci: fraktal, karbon aktif, tandan kosong kelapa sawit, H3PO4, Box-counting
Co-Authors Elya Febrita Irfana Diah Faryuni Joko Sampurno Mariani Natalina L, Mariani