PBL in the Elementary Grades January 1, 2011 by Sara Hallermann; John Larmer; John R. Mergendoller.

Hallermann, S, Larmer, J, and Mergendoller, J (2011) PBL in the Elementary Grades. Novato, California: Buck Institute for Education

This book is a practical guide to Project Based Learning. It is designed for elementary and contains step by step guidance for planning a successful project. It provides information about assessment, management and project-ready rubrics and handouts. This would be a good resource to support new teachers in project-based learning from grades K-5.