With the release of the Framework and the NGGS, we have the opportunity to improve the teaching and learning of science and to help move our nation forward by providing all students with the depth of understanding of big ideas, scientific and engineering practices, and crosscutting elements needed to be productive citizens and leaders in the 21st century. However, extensive professional development based on viable models supported by careful research is needed in order for teachers to implement the vision outlined in the Framework and the NGSS with fidelity in science classrooms. Several features of such professional development discussed in this chapter include:
• engaging teachers in analyzing student work,
• engaging teachers in learning generalizable features of new curriculum materials, and
• building teachers’ understanding over time.

This sample chapter also includes the Table of Contents, Foreword, and Index.