Changes to the TN Middle Grades Science Curriculum According to NGSS
  The Framework for K-12 Science Education (July 2011) developed by the National Resource Council (NRC) draws on current scientific research and the ways students learn science effectively. This laid the foundation for Next Generation Science Standards (NGSS) released in Spring 2013. Tennessee was one of the 26 lead state partners to provide leadership to the standards writing team and to provide guidance as states deliberate on the adoption and implementation of the NGSS. We propose that the transition from current State science standards to NGSS demonstrates a extensive consensus on what all students should know and be able to do at specific K-12 grade levels and what topics can be postponed or excluded on the premise of developmental readiness. In order to facilitate this work, one of the STEM Fellows, Larry Bowman (author), created a series of 18 posters showing correlations between the current Tennessee Science Education standards (Huffman, 2009) and NGSS (Achieve, 2013). This article specifically addresses the NGSS Middle Grades Disciplinary Core Ideas (DCIs) as compared to the existing 6-8 Science Standards from the Tennessee Science Curriculum Framework. Some Grade Level Expectations (GLEs) for Middle Grades Science have been relocated to other grade levels, and others have been introduced. The term Middle Grades is used for students 10 to 15 years of age covering the critical years when children are transitioning from concrete operational to formal operational stages. (Piaget and Inhelder 2013). 
Larry L. Bowman, Jr., and Aimee Lee Govett
physics.ed-ph