The aim of this action research is to know whether there is an improvement in learning activity and achievement of grade IV students in learning three dimension shapesthrough the implementation of realistic approach. This research was conducted in Primary school 9 Sesetan in the academic year 2011/2012. The subjects of this study were 45 students of grade IV Primary school 9 Sesetan. The data collected in this research covered: students’ learning activity which was collected from observation, and students’ achievement data which was collected through some achievements test in form of objective and essay. This research was conducted in two cycles. The result of this study shows that the students’ learning activity in cycle one was quite active, and in cycle two the students’ learning activity was categorized as active. From the achievement of the students it was found that the average score, learning capacity, and learning outcome from the pre-cycle, cycle 1, and cycle 2 consecutively are: 4.98, 49.80% and 26.67%; 6.66, 66.60% and 53.30%; then 8.20, 82% and 91.10%. From the result of data analysis and discussion, then it can be concluded that there is an improvement in terms of students’ learning activity and achievement of IV grade students of Primary school 9 Sesetan in the academic year 2011/2012 in learning three dimension shapes through the use of realistic approach.
Perubahan besar dalam bidang pendidikan yang disebabkan oleh Pandemi Covid-19 menyebabkan penurunan kemampuan berpikir siswa. Oleh karena itu, sangat penting untuk menganalisis bagaimana tingkat kemampuan berpikir siswa di era ini. Tujuan dari penelitian ini adalah untuk menganalisis kemampuan berpikir tingkat tinggi matematika siswa pada era Pandemi Cocid-19 dengan menggunakan tiga tahapan metaphorical thinking. Penelitian ini dilaksanakan pada semester Genap. Subjek dalam penelitian ini adalah 11 siswa kelas IIB Program Studi Pendidikan Matematika Universitas Mahasaraswati Denpasar, Indonesia. Penelitian ini menggunakan teknik analisis deskriptif. Pengumpulan data dilakukan melalui tes, wawancara, observasi, dan dokumentasi. Hasil penelitian menunjukkan bahwa kemampuan berpikir tingkat tinggi matematika siswa sangat rendah dimana hanya 20% siswa menjawab benar pada tahap grounding metaphors, 25% pada tahap linking metaphors, dan hanya 25% pada tahap redefinitional metaphors. Secara umum, fenomena ini terjadi dikarenakan berkurangnya kesempatan siswa untuk berinteraksi dan berdiskusi saat pembelajaran daring di era Pandemi yang juga menyebabkan kurangnya kesempatan siswa untuk saling bertukar pemahaman dan pengetahuan. Siswa juga tidak dapat memahami masalah secara mendalam dan menghubungkan konsep dengan kehidupan sehari-hari.
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