摘要：Students who have a good comprehension on learned concepts will be able to present the concepts by using multi-representation. This study seeks to investigate the improvement of junior high students’ understanding of the concept of Newton’s Laws and the quality of representations used in solving problems pertaining to Newton’s Law of Motions. The results showed that the students’ understanding of the learned concepts increased from the average of 35.32 to 78.97 with an effect size of 2.66 (strong) and N-gain of 0.68 (average). The quality of each type of students’ representations also increased from level 1 and level 2 to level 3.
其他摘要：Abstrac t : Students who have good conceptual acquisition will be able to represent the concept by using multi representation. This study aims to determine the improvement of students' understanding of the concept of Newton's Law material, and the quality of representation used in solving problems on Newton's Law material. The results showed that the concept acquisition of students increased from the average of 35.32 to 78.97 with an effect size of 2.66 (strong) and N-gain of 0.68 (medium). The quality of each type of student representation also increased from level 1 and level 2 up to level 3. Key Words : concept aquisition, represetation quality, multi representation learning, Newton’s Law Abstrak : Siswa yang memiliki penguasaan konsep yang baik akan mampu merepresentasikan konsep dengan menggunakan multi representasi. Penelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep siswa SMP pada materi Hukum Newton, dan kualitas representasi yang digunakan dalam menyelesaikan masalah pada materi Hukum Newton. Hasil penelitian menunjukkan bahwa penguasaan konsep siswa meningkat dari rata-rata 35,32 menjadi 78,97 dengan effect size sebesar 2,66 (kuat) dan N-gain sebesar 0,68 (sedang). Kualitas tiap jenis representasi siswa juga mengalami peningkatan dari level 1 dan level 2 naik menjadi level 3. Kata kunci : hukum Newton, kualitas representasi, pemahaman konsep, pembelajaran multi representasi
关键词：concept aquisition;represetation quality;multi representation learning;Newton’s Law
