PROFIL KEMAMPUAN SISWA KELAS VII SMP BK PEANA DALAM MENYELESAIKAN SOAL OPERASI PENJUMLAHAN DAN PENGURANGAN BENTUK ALJABAR DITINJAU DARI KEMAMPUAN MATEMATIKA

Students’ Ability Profile in Grade VII At SMP BK Peana in Solving Algebraic Addition and Substraction Questions Reviewed From Mathematics Ability

Abstract

This study aims tofind out the types of mistakes made by students in solving quadrilateral story problemsbased on the Newman Procedure. The subjects of this study were class VII A students of SMP Negeri 12 Palu,totaling 2 people, namely AA students and RA students. This type of research uses descriptive research with aqualitative approach. Data collection is carried out by tests and interviews. The results of this study show thatstudents' mistakes in solving quadrilateral story problems, especially in rectangular and square class VII A ofSMP Negeri 12 Palu are 1) reading errors, namely students are unable to recognize the keywords contained inthe questions. 2) Comprehension errors, namely students know what is known completely, are able to explainwhat is known using their own sentences, and are able to understand what is asked according to the questionrequest. 3) Transformation errors, namely students do not know the formula to be used and unable to determinethe exact formula in solving the problem. 4) Process skills errors, namely students do not know the correctprocedures or steps to solve the problem, and are wrong in carrying out the calculation process, namely inoperating numbers. 5) Enconding errors, namely students are unable to show the final answer to the problemsolving,are unable to write andexplain the final answer according to the conclusion inquestion.