สาเหตุ ใช้ขนาด 5 : 1 ( มากนัก ) 5 ( สำคัญมาก )
2.4. Procedure
The practical stage of the research took place in 2010, covering all regions of Latvia – Kurzeme, Vidzeme, Latgale and Zemgale. All teachers voluntarily agreed on participating in this research, because they were assured of the principle of confidentiality. In order to avoid interfering with school working regime, the teachers were giving their answers at the end of their work day, because the majority of teachers work according to the individual schedule. Teachers were participating in this study in small groups or individually. After the survey
the data were statistically processed.