Coding curricula for 5th to 8th graders

I would appreciate any company recommendations for an introductory summer camp course (10 to 20 hrs) on coding, for 5th to 8th graders. I am looking for a curriculum package so I don’t have to develpp this myself, something field tested with history/recs/best practices. This is a beginners course we will instruct in conjunction with math camps we do. Thanks. has its own courses and also lists recommended resources for elementary, middle, and high schools.