  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).
