UPAYA MENINGKATKAN KEMAMPUAN OPERASI HITUNG PENJUMLAHAN DAN PENGURANGAN BILANGAN BULAT SISWA SD KELAS IV

Abstract

Abstrak

Penelitian ini bertujuan untuk meningkatkan hasil belajar operasi hitung penjumlahan dan pengurangan bilangan bulat siswa SD kelas IV dengan menggunakan media garis bilangan di SDN Karanggondang, Sewon, Bantul, Yogyakarta. Penelitian ini adalah penelitian tindakan kelas (Classroom Action Research) model Kemmis dan Mc. Taggart.. Subjek penelitian ini adalah siswa kelas IV berjumlah 35 siswa. Teknik pengumpulan data yang digunakan adalah tes, observasi dan dokumentasi. Teknik analisis data dilakukan secara deskriptif kuantitatif. Hasil penelitian menunjukan bahwa ada peningkatan hasil belajar Matematika. Pada siklus I diproleh peningkatan hasil rata-rata skor 64,39 ketuntasan, 74% siswa belum tuntas dan 26% siswa yang tuntas. siklus II rata-rata skor meningkat menjadi 85, 22,85% siswa yang belum tuntas dan 77,14% siswa yang sudah tuntas. Dengan demikian ada kenaikan rata-rata dari siklus I ke siklus II sebesar 20,61. Selain itu keaktifan siswa dalam mengikuti pelajaran juga meningkat hal ini ditandai dengan meningkatnya keaktifan siswa dalam bertanya, menjawab pertanyaan dan mengemukakan pendapat (sesuai hasil observasi).

Kata Kunci : Penjumlahan dan Pengurangan bilangan bulat, Garis Bilangan, siswa SD.

Abstract

This study aimed to improve learning outcomes in arithmetic operations of addition and subtraction of integers among Grade IV students of the elementary school through number line media at SDN Karanggondang, Sewon, Bantul, Yogyakarta. This was a classroom action research study employing the model by Kemmis and Mc. Taggart. The research subjects were Grade IV students with a total of 35 students. The data were collected through tests, observations, and documentation. They were analyzed by means of the quantitative descriptive technique. The results of the study showed that there was an improvement in Mathematics learning outcomes. In Cycle I, there was an improvement and the mean score of the mastery was 64.39; 74% attained the mastery. In Cycle II; the mean score improved to 85 of the mastery; 22.85% did not attain the mastery and 77.14% attained it. Therefore, the improvement in the mean score from Cycle I to Cycle II was 20.61. In addition, the students’ activeness in joining the class also improved, indicated by their activeness in asking questions, answering questions, and expressing opinions (based on the results of observations).

Keywords: Addition and Subtraction of Integers, Number Line, Elementary School Student.