近年来,全国的中小学陆续开展了“大课间”活动,即每天上午或者下午,有一个30分钟的“大课间”活动时间,保证学生每天在校锻炼时间不少于一个小时。在这段时间里学校没有课程安排,而“大课间”活动的内容由学校根据自身情况来定,可以组织学生做广播体操、跳集体舞,也可以分年级组织兴趣班活动。国家对全国中小学生的体质检测及调查结果 In recent years, many primary and secondary schools across the country have launched a “big lecture” activity, that is, every morning or afternoon, there is a 30-minute “big lecture” activity time to ensure that students work at school for not less than One hour. During this period of time, there is no curriculum in the school, and the contents of the “Big Diploma” activities are determined by the school according to their own circumstances. They can organize students to perform radio gymnastics, dance together, and organize interest classes in different grades. National Physical Examination and Investigation Results of Primary and Secondary School Students in China