<b>Backgrounds:</b> Sleepiness is reported to predict sleep quality, academic performance and self-regulation. This stud......

学生做作业是每天课后必须做的工作，学生真正的学习自主性是在独立完成作业中培养和表现出来的。本文对学生在独立完成数学课后作业......

本文通过对福建省4个地区学校排球课外体育训练现状进行调查，总结了影响福建省学校排球课外体育训练发展的领导重视程度、竞赛体系......

Introduction: The transition from primary to secondary school is a period when physical activity (PA) declines. Interven......