초등학생을 대상으로 한 결과였으므로 수업환경의 변화가 큰 중학생에게는 어떠한 결과가 나타나는지를 확인할 필요가 있었다.
As the result was for elementary school students, it was necessary to check the results of middle school students who were facing the large changes in the classroom environment.