Rina Agustina (2015) Kesalahan Siswa Smk Dalam Menyelesaikan Masalah Aplikasi Trigonometri Ditinjau Dari Tipe Kepribadian Phlegmatis
The research was a descriptive qualitative. The aims of the research is to describe the mistakeat vocational high school students in solving the application problem of the trigonometry viewed personality type phlegmatic. The steps of the research were: (1) doing personality test, (2) choose three students who has personality type phlegmatic, (3) doing taks application of the trigonometry test, (4) doing interview to the student about their answer, (5) analyze students answer, (6) conclution about the mistake of the students. The results of the research showed that mistakeat vocational high school students in solving the application problem of the trigonometry for phlegmatic student: (1)conceptual mistake in the use of formula or theorem or definition that does not comply with the conditions prerequisite enactment of formula or theorem or definition, (2) a procedural mistake the steps in solving the problems.
Key word: Mistake At Vocational High School Students, Application Of TheTrigonometry, Personality Type Phlegmatic
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