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All Journal PROSIDING SEMINAR NASIONAL Hipotenusa : Journal of Mathematical Society Jurnal Pengabdian Masyarakat : Pemberdayaan, Inovasi dan Perubahan Jurnal Insan Pendidikan dan Sosial Humaniora
Lenny Kurniati
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Religion Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Other

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Journal : prosiding seminar nasional

 1 
PENERAPAN BAHAN AJAR GEOMETRI RUANG BERBANTUAN GEOGEBRA PADA MATERI IRISAN BIDANG PADA BANGUN RUANG Destia Wahyu Hidayati; Lenny Kurniati
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2018: SEMINAR NASIONAL PENDIDIKAN SAINS DAN TEKNOLOGI
Publisher : Universitas Muhammadiyah Semarang

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Abstract

ne of subject material which is learned by students in Mathematics Education Program is 3D-Shapes Geometry. The average of 3D-Shapes Geomery students’s mark in IKIP Veteran Jawa Tengah is still under 70. The average of 3D-Shapes Geometry student’s mark is low because their critical thinking ability is low too. It is caused by learning material which is used. This teaching aid just consists of material and exercise. Students also too depend on confirmation from their lecturer to give decision of the truth answer when they were doing the exercise inthe learning material. The solution of this problem is they can use 3D-Shapes Geometry Learning using Geogebra because they can check the truth answer by Geogebra. There are steps that students do when they were using Geogebra. This research is quantitative research. Instrument of this research is critical thinking ability test. This research use One Sample T-Test and gain. The conclusion of this research are the average of 3D-Shapes geometry’s mark is more than 70 and the increase of average 3D-Shapes Geometry’s mark is in the middle category. Keywords: Learning material, 3D-shapes geometry, geogebra, critical thinking ability
PENGARUH OPTIMISME TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA PADA SISWA SMA Lenny Kurniati; Asef Umar Fakhruddin
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2018: SEMINAR NASIONAL PENDIDIKAN SAINS DAN TEKNOLOGI
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Optimists are people who expect the good thing in the future. This paper focusing in particular on how optimism may lead a person, especially a student to cope and solve a  problem. The primary pupose of this paper is to review the beneficial effect of optimism, on students problem solving abilities. This study was conducted on 164 high school students using an optimism questionnaire instrument and a test of mathematical problem solving abilities. The result show that optimism and students' mathematical problem solving abilities have a positive and significant relationship, its indicated by the r product moment score of 0.79. In addition correlation were obtained optimism influences students' mathematical problem solving abilities by 63%. Further research is needed to improve students' ability to solve mathematical problems through optimism.Keywords: optimism, problem solving ability, mathematics, education
Co-Authors Adi Nova Trisetyanto Akhmad Nayazik Asef Umar Fakhruddin Banun Sri Haksasi Destia Wahyu Hidayati, Destia Wahyu Imam Bakhtiar Kurniawati Kurniawati Tiara Nove Ria