Participants
The participants of the study included three primary classroom teachers and forty-three fifth grade students. The participants were selected based upon purposeful sampling procedures from one primary school in Ankara in Turkey. Because of the confidentiality, the name of the school was not stated here. The school was one of pilot schools that the new developed mathematics curriculum was implemented. One teacher was male and the others were female. Their experiences were different from each other. One of the female teachers was working as a teacher for 17 years. The other one had 18-year-experiences in teaching profession. On the other hand, the male teacher who was the most experienced one had 27-years-experiences. Of the students, 23 were girls whereas 20 were boys. Their ages ranged from 10 to 11.