PROSES BERPIKIR SISWA KELAS IX SEKOLAH MENENGAH PERTAMA YANG BERKEMAMPUAN MATEMATIKA TINGGI DALAM MEMECAHKAN MASALAH MATEMATIKA

Abstract

Abstract: This  study  aim  to  describe  the  students’  thinking  process  of  9th  grade  of  Junior High School has a high mathematics capability in solving the mathematics problem based on Polya rule. 

This  study  is  qualitative  descriptive  research.  The  criteria  of  subject  selection included the students’ has a high mathematics capability and communication fluency both spoken  and  written.  The  data  collection  was  done  using  written  test  and  task-based interview  techniques.  Data  analysis  done  based  on  written  test  data  and  task-based interview techniques data. And then it has been done the method triangulation to get valid subject data.  

Finally,  the  result  of  description  thinking  process  as  follows:  students  with  high mathematics  capability,  in  understanding  problem  using  assimilation  thinking  process, make  a  plan  using  assimilation  and  accommodation  thinking  process.  Assimilation thinking process can be identified when the students can mention the prerequisite material, can directly relate the sides kite (BF = FG) and can directly develop problem solving plan. Meanwhile,  accommodation  thinking  process  can  be  seen  when  the  students  drew  an auxiliary  line  from  E  to  the  right  thereby  intersecting  with  CD  line  (the  intersection  was labeled  H  point),  so  devided  trapezoid  AEDG  become  right  triangle  EHG  and  rectangle AEHD. In carrying out a plan and in looking back at the completed solution, the students used assimilation thinking process.

 Keywords: thinking process, mathematics problem, and problem solving.