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Abstrak. Penelitian ini dilatarbelakangi rendahnya kemampuan Higher Order Thinking Skills (HOTS) siswa Sekolah Menengah Pertama (SMP). Profesionalisme guru sangat erat kaitannya dengan HOTS siswa. Penelitian ini bertujuan untuk menganalisis profesionalisme guru dalam membuat soal HOTS sebelum dan sesudah dilakukan pelatihan. Metode penelitian yang digunakan adalah metode survey. Tujuh belas guru dari 11 SMP se-Kecamatan Padang Utara, Sumatera Barat dijadikan sebagai subjek penelitian. Awalnya guru diminta membuat soal HOTS sebelum diberikan pelatihan. Selanjutnya, para pakar memberikan pelatihan dalam perancangan soal HOTS. Soal HOTS yang disusun oleh guru dianalisis sebelum dan sesudah mengikuti pelatihan. Hasil penelitian menunjukan bahwa 41% guru yang mampu membuat soal HOTS sebelum diberikan pelatihan. Soal HOTS yang dibuat oleh guru masih belum benar, karena kata kerja operasional pada soal masih berada pada level C1-C2. Semua guru dapat membuat soal HOTS setelah diberikan pelatihan. Dari semua guru, 30 % guru mampu memahami sebagian materi pelatihan dan mampu membuat soal HOTS namun masih belum benar dan 70 % guru mampu memahami materi pelatihan dan mampu membuat soal HOTS dengan benar.

Research on teacher professionalism in the learning process experiences exponential growth. One form of teacher professionalism is how teachers can use media that can make learning interesting. Geogebra is an application that can be used by teachers in learning on certain material. This research was a survey research that sees teacher interest in the use of geogebra software. Sixteen teachers from 10 junior high schools in one sub-district in one of city at Indonesia were chosen as research subjects. The training was held for five hours. When the teacher training was videotaped, observed, and interviewed. Obtained 84.76% percent of teachers gave good attention and 73. 18 % give good participation to this training.

The problem of learning difficulties in calculus courses has become a hot topic in universities. Calculus is a compulsory course, which is not only studied by learners majoring in mathematics but also physics, chemistry, biology, engineering, etc. However, learner's achievement in this course are still very concerning. Many learners fail in this course. Considering this problem, this study attempts to investigate difficulties and errors made by learners in understanding and solving calculus problem, with a particular focus on research topics associated to limit. To this aim, observation and documentation were conducted to reveal the data. The subjects of this study were learners of biology and science study program. The subjects were selected through certain consideration, purposive sampling technique. The research results about learner's difficulties and errors made by learners are classified based on the steps of problem solving process, namely understanding the problem, planning a strategy, select a strategy, performing the strategy and verifying.

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