A backpack, lunch box, crayons and at least 10 hours of sleep each night are all things children need to get off to a good start in kindergarten, according to a new study.
원문출처 : https://www.cnn.com/2022/07/13/health/kindergarten-transition-sleep-study-wellness/index.html
원문출처 : https://www.cnn.com/2022/07/13/health/kindergarten-transition-sleep-study-wellness/index.html