Penelitian ini bertujuan untuk meningkatakan hasil belajar matematika menggunakan model pembelajaran kooperatif tipe two stay two stray di kelas IV A SDK Frater Don Bosco Tarakan pada materi operasi hitung perkalian dan pembagian bilangan.
Jenis penelitian ini adalah penelitian tindakan kelas (PTK) yang dilaksanakan dalam 2 siklus, masing-masing siklus terdiri atas 4 tahap, yaitu : perencanaan, tindakan, observasi, dan refleksi. Subjek penelitian adalah siswa kelas IV-A SDK Frater Don Bosco Tarakan yang berjumlah 20 orang siswa, data yang diperoleh dengan menggunakan tes hasil belajar (kognitif, afektif, psikomotorik), lembar pengamatan aktivitas guru, dan lembar pengamatan aktivitas siswa.
Berdasarkan hasil penelitian, diperoleh nilai rata-rata hasil belajar kognitif pada siklus I sebesar 60% menjadi 80% pada siklus II, hasil belajar afektif pada siklus I sebesar 35% menjadi 100%, dan hasil belajar psikomotorik pada siklus I sebesar 40% menjadi 100%, dan aktivitas dalam guru dan siswa pembelajaran menjadi meningkat dari siklus I ke siklus II.
Kesimpulan penelitian tindakan kelas ini mampu meningkatkan hasil belajar matematika pada siswa kelas IV-A SDK Frater Don Bosco Tarakan.

Kata Kunci: Hasil Belajar Matematika, Model Pembelajaran Kooperatif Tipe Two Stay Two Stray

This study was aimed at improving mathematic learning result using cooperative learning model of two stay two stray at class IV-A SDK Frater Don Bosco Tarakan on the material about quantification operation of multiplication and division of numbers. The type of this research was a classroom action research which was conducted in two cycles, each of them consisted of 4 steps, namely planning, action, observation, and reflection. The subject of the study was the students at class IV-A SDK Frater Don Bosco Tarakan that consisted of 20 students. The data obtained by using learning result test (cognitive, affective, and psychomotoric), observation sheet of the teacher’s activity and observation sheet of the students’ activity. Based on the result of the study, it was obtained the mean score of the cognitive learning result in cycle I that was equal to 60% became 80% in cycle II, the affective learning result in cycle I that was equal to 35% became 100% in cycle II, and the psychomotoric learning result in cycle I that was equal to 40% became 100% in cycle II and the teacher and students’ activity in the learning process increased from cycle I to cycle II. The conclusion of this classroom action research was able to improve the mathematic learning result of the students of class IV-A SDK Frater Don Bosco Tarakan. Keywords: Mathematic Learning Result, Cooperative Learning Model of Type Two Stay Two Stray