From the Constitutional Rights Foundation

Why was the Constitution necessary? In this free unit from CRF’s Adventures in Law and History, students explore the meaning of the Preamble, meet James Madison and help him put together the Bill of Rights, and learn much more in interactive lessons.

Source

https://www.crf-usa.org/images/pdf/members/4b5_mr_madison.pdf

CRF is a non-profit, non-partisan, community-based organization dedicated to educating America's young people about the importance of civic participation in a democratic society.