September 17 is designated as Constitution Day and
Citizenship Day to commemorate the signing of the U.S. Constitution in
Philadelphia on September 17, 1787.
Some available resources are:
Books
Catrow, David. We the kids: the preamble to the Constitution
of the United States
(Juv.342.73 .C367w)
Fradin, Dennis B. The
founders: the 39 stories behind the U.S. Constitution
(Juv. 973.3092 .F799f)
Hennessey, Jonathan The
United States Constitution: a graphic adaptation
(Juv. 320.973 .H515u)
Websites
National Archives- Educator Resources
National Constitutional Center – Educational Resources