This Third Grade Teacher’s Guide provides information for third grade teachers on how to support families as they practice foundational reading skills at home. It serves as a companion to the What Works Clearinghouse (WWC) practice guide, Foundational Skills to Support Reading for Understanding in Kindergarten Through 3rd Grade. Both guides present four research-based recommendations and how-to steps: the WWC guide is for teaching children at school, and this guide is to help teachers support families in practicing foundational reading skills at home.