Peningkatan Hasil Belajar Operasi Hitung Bilangan Desimal Menggunakan Block Dienes Pada Kelas IVA SDN Bandungrejosari 3 Malang

Abstract

This research is based on the low learning outcomes of mathematics, especially on the
arithmetic of decimals in class IVA at SDN Bandungrejosari 3 in the academic year 2022/2023. In the
initial observation, the learning outcomes of students showed an average value of 48 with the
proportion of students who achieved criteria only 25.93%. The aims of the research are (1) to describe
efforts to improve the learning outcomes of decimal arithmetic for class IVA students at SDN
Bandungrejosari 3 using the Dienes Block, (2) to improve the learning outcomes of decimal arithmetic
for class IVA students at SDN Bandungrejosari 3 using the Dienes Block demonstration tool. This
research method is Classroom Action Research by Kemmis and Mc Taggart with four stages of
research: planning, implementation, observation, and reflection. The subject of this study was class
IVA with a total of 27 students consisting of 17 boys and 10 girls. The research was conducted in two
cycles with each cycle having two meetings. Data collection techniques were obtained from the results
of tests and observations. The results showed that there was an increase in learning outcomes in cycle
I to 65.61 with a percentage of achievement of criteria of 66.67%, and in cycle II it increased to 76.42
with a percentage of achievement of criteria of 81.48%. This process shows that learning to count
decimal arithmetic using Dienes Block can improve learning outcomes.