Mathematics has important roles in forming the students' character at school. At least, there are nine characters' value which can be formed through learning mathematics, there are:religious, disciplined, honest, hard working, creative, curiosity, independent, communicative, and responsibility. Therefore, teachers need a means to assess those characters. Technology can be used as a means or tool in the assessment of learning, this term is referred as e-assessment. Originating from an idea for combining between assessing the attitude and using the e-assessment, the researcher developed the attitude e-assessment. The purpose of this research is to produce the attitude e-assessment in teaching Mathematics at high school. This study is a part of developing research which used 4D model as the development basis that cover define stages, design, develop, and disseminate. The result of the analysis which is conducted to the practitioners, learning evaluation expert, and instructional media expert, the product of e-assessment got 3,34 which means that it is valid. While the analysis result of users' respond which is conducted to 10 students grade X of Madrasah Aliyah Negeri Kota Batu, the e-assessment product got 3,32 which means that its valid.Based onthose tests, theattitudee-assessmentproducts in thehigh schoolmathematicsteachinghas been declaredvalidorproper.
Kompor menjadi salah satu teknologi yang berperan penting dalam pemanfaatan energi pada skala rumah tangga. Pemanfaatan limbah biomassa sebagai sumber bahan bakar disebabkan karena limbah tersebut mempunyai kandungan energi yang cukup signifikan. Berdasarkan data statistik BPS untuk produksi jagung tahun 2016 provinsi NTB mencapai 1.278.271 ton dan mengalami peningkatan ditahun 2017 mencapai 2.127.324 ton, berdasarkan data tersebut tidak menutup kemungkinan jagung akan menghasikan tongkol jagung yang potensial untuk dikembangkan menjadi bioetanol dan bioenergi. Tujuan penelitian ini adalah untuk merancang bangun alat kompor gasifikasi biomassa limbah tongkol jagung skala rumah tangga, mengetahui pengaruh variasi kecepatan aliran udara terhadap temperatur ruang pada proses pembakaran limbah tongkol jagung, mengetahui perbandingan temperatur pendidihan air pada variasi kecepatan aliran udara 5.0 m/s, 10.0 m/s, dan 15.0 m/s. Metode penelitian yang digunakan adalah metode experimental dengan melakukan percobaan dan uji performansi di Laboraturium Perbengkelan Pertanian. Penelitian dilakukan dengan cara memvariasikan kecepatan udara yang masuk kedalam reaktor dengan variasi kecepatan 5,0 m/s, 10,0 m/s dan 15,0 m/s. Parameter yang diamati meliputi temperatur ruang pembakaran, temperatur pendidihan air, dan waktu penyalaan awal. Hasil penelitian menunjukkan variasi kecepatan udara 15.0 m/s berpengaruh terhadap temperatur pembakaran tertinggi dengan 359,13 dengan berat abu 100 gram, kemudian temperatur pendidihan air tertingginya 60℃, dan penyalaan awal tercatat pada menit ke 2:20:31. Dari hasil penelitian tersebut dapat dikatakan bahwa dengan menggunakan variasi kecepatan tertinggi dapat menghasilkan pembakaran yang sempurna.
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