Learn all about U.S. Presidents through a mix of historical documents. Perfect for social studies curriculum, this pack includes 20 primary sources that highlight American leaders from George Washington to Barack Obama. By reading a mix of pieces, ranging from political cartoons to diagrams, students are able to make their own observations, think analytically and cite evidence to support opinions. Cardstock. (20 pcs. per unit) 8 1/2" x 11"