This nonpartisan tool has allowed learners of all ages to engage with the text of the Constitution, discover how experts agree and disagree about its history and meaning, and explore arguments on all sides of the constitutional debates at the center of American life. Click on the image above or go to https://constitutioncenter.org/interactive-constitution
This part of the Teaching American history site is all about the constitutional convention. The entire site, TeachingAmericanHistory.org, is a project of the Ashbrook Center for Public Affairs at Ashland University.
The Interactive Constitution is the best nonpartisan Constitution on the web! The Interactive Constitution features explanatory material for students written by constitutional scholars from a range and legal and philosophical perspectives.