A sample of this research is that the students Grade 4 that studying in semester 2 academic year than home school home-2557 (2014) orange 18 number ones, who have come by way of a specific random.
The sample of this research is the 4th grade students who are studying in 2nd Semester of 2557 kg orange-city schools, 18 of which have come by way of sampling.
The sample of this research is to study 4 studying in the first semester of academic year 2557 2 school house kg orange Hong. The 18 who were selected by random specific.