An Analysis of Kindergarten Science Education Standard in the United States With a Focus on the Dimension of Practices in Next Generation Science Standards
National Center for Education Statistics: State Education Reforms, Table 5.3. Types of state and district requirements for kindergarten entrance and attendance, by state: 2012 , Web サイト http://nces.ed.gov/programs/statereform/tab5_3.asp(2014年3月20日最終取得.)\n