Easy to print "pdf" format complements the learning progress. Includes: "100
Questions on US Civics and History" and "US History" Follow step by step the website's content, and practice with each unit's exercise. *
Teachers: may reproduce pages for their class.
SYSTEM REQUIREMENTS: Windows 95/98/ME/NT/2000/XP/VISTA or Mac OS X. Installation recommended for Windows Vista and Mac OS X. Installation requires 230MB disk space.