This coming Saturday is Constitution Day in the United States. If you find yourself in need of some lesson ideas for Constitution Day, C-SPAN, DocsTeach, and TED-Ed all offer either lesson plans or resources for building your own Constitution Day lesson plans.

Constitution Day Lesson Plans from C-SPAN Classroom
C-SPAN Classroom offers free lesson plans and Bell Ringers (discussion prompts) that were either designed for Constitution Day or can be used to meet the requirements of Constitution Day. All of the lesson plans incorporate short video clips addressing topics like enumerated and implied powers of Congress, interpretation of the Constitution, and checks and balances. You can find all of the lesson plans and additional resources in this Google Doc.
DocsTeach
DocsTeach is a National Archives website that all middle school and high school U.S. History teachers should have in their bookmarks. DocsTeach lets you build online activities based upon curated collections of primary source documents. DocsTeach also provides some pre-made activities that you can give to your students. DocsTeach has twenty pre-made Constitution Day activities that you can use today. An additional 166 documents and artifacts about the Constitution can be found through a quick search on DocsTeach.
TED-Ed Lessons
TED-Ed offers a bunch of lessons that are appropriate for Constitution Day. Those lessons are linked below.

The Making of the American Constitution.

Why is the US Constitution So Hard to Amend?

Why Wasn’t the Bill of Rights Originally Included in the US Constitution?

How is Power Divided in the US Government?

A 3-Minute Guide to the Bill of Rights

How do Executive Orders Work?

What You Might Not Know About the Declaration of Independence