PENINGKATAN KEAKTIFAN MAHASISWA PADA PEMBELAJARAN PENGEMBANGAN MEDIA MANIPULATIF MELALUI STRATEGI SNOWBALL THROWING

Tujuan dari penelitian ini adalah mendeskripsikan langkah-langkah penerapan strategisnowball throwinguntukmeningkatkan keaktifan mahasiswa pada pembelajaran pengembanganmedia manipulatif. Subyek penelitian adalah mahasiswa Prodi Pendidikan Matematika kelas2012B sebanyak 20 orang.Penelitian ini adalah Penelitian Tindakan Kelas yang terdiri duasiklus, tiap siklus terdiri dari empat tahapan yaitu perencanaan, pelaksanaan, pengamatan danrefleksi. Data yang diperoleh berupa nilai persentase peningkatan keaktifan pada akhir siklus Idan pada akhir siklus II. Hasil penelitian menunjukkan peningkatan keaktifan mahasiswa.Peningkatan keaktifan mahasiswa dapat dilihat dari meningkatnya indikator keaktifanmahasiswa pada siklus I dan II. Selain itu hasil tes akhir mahasiswa yang menenuhi kriteriakeberhasilan juga mengalami peningkatan pada siklus Isebesar 65%meningkat menjadi 90%pada siklus II.Berdasarkan kriteria keberhasilan disimpulkan bahwa penerapan strategipembelajaran snowball throwing dalam pembelajaran pengembangan media manipulatif dapatmeningkatkan keaktifan mahasiswa.Kata-kata Kunci: keaktifan, media manipulatif, snowball throwin

Peningkatan Pemahaman Konsep Siswa Pada Materi Lingkaran Dengan Menggunakan Media Manipulatif

Based on this initial observation on the students of grade VIII, it was found that the ability of the student’s concept understanding on the subject about circle was low.  Only 40% of the students were included in the category of understanding the concept. Manipulative media was needed to increase student’s concept understanding on the subject about circle. This research aimed to describe the learning steps using manipulative media to increase student’s concept understanding on the subject about circle. Class Action Research using Kemmis and McTaggart model was applied on this research. The steps of Kemmis and McTaggart model consist of: planning, action, observation, and reflection. The instruments used in this research were: examination sheet, learning observation sheet, and interview guidance. This research used manipulative media on the subject about circle, which could increase student’s concept understanding. The research result showed that: a) there was 30% increase in student’s concept understanding, which was 50% of students in cycle I were in the cathegory of understanding the concept, it was increased into 80% on cycle II, and b) there was 5% increase of learning mastery, which was 85% of students learning mastery in cycle I were increased into 90% on cycle II