Free social studies printables and presentations for Kindergarten through the elementary grade levels.
Months of the Year Educational Free Resources -- organized by months of the year for Pre-K through elementary grades including back to school through the end.
This post has a review of the book Good Afternoon Vietnam: A Civilian in the Vietnam War by Gary L. Wilhelm, as well as a free discussion guide for secondary teachers.
This post explains how Oriental Trading helps organize back to school for a successful school year with resources prior to the first day of class. Free PDF!