Wheeler 
U.S. Government, Grades 5 – 8 [PDF ebook] 

A top-selling teacher resource line, The 100+ Series(TM) features over 100 reproducible activities in each book! The engaging activities found in U.S. Government have been updated to include Barack Obama and help your students to better understand the government under which they live. The first section focuses on understanding and examining the Constitution and the Amendments. The book also includes 4 cards (0.5" x 4.5" each) which highlight each president that students are able to use in a variety of ways to learn more about our presidents.