Tools used in the research is to query the opinions of teachers about the study and problems of teaching of teachers, material, mathematics, critical thinking skills, and problem solving. High school level.
The instrument used for this research. Survey of teachers about the study and the teaching of mathematics teachers subject-oriented skills, critical thinking and problem solving. secondary
The tool is used in research. Opinions of the teachers about the study of the teaching of the teachers the essence of mathematics that focuses on analytical thinking skills and solve the problem. Secondary school.