Tom Richey
Tom richey.net: The u.s. Constitution: Framing, Principles and Ratification [Ppt]
Presents key ideas for examining how the Articles of Confederation were replaced with the Constitution and the compromises that were reached during debates.
Utah State University
American Journey: Comparison of Articles of Confederation and the Constitution
Two informative charts, one of which compares the Articles of Confederation and the Constitution, the other which lays out the positions of the Federalists and Anti-Federalists concerning the Constitution.