Finished Basement Floor Plans What Is A Good FREE Program To Create Floor Plans/house Plans?

What is a good FREE program to create floor plans/house plans? - finished basement floor plans

My son and I finish our basement of his main project for the school. Part of the project includes the creation of original projects in the cellar. Must demonstrate the basics, I think, diagrams, charts, and all that kind of thing. Is there a good program in the free and easy to do what I can download?