For some reason, this concept is rarely in textbooks, and if it IS in the book, it's glossed over.
This is just a handout that introduces and practices the concept of BECAUSE (parce que) vs. BECAUSE OF (à cause de/grâce à), a hard concept for kids. It's a Word doc, so you can manipulate it the way you'd like. The examples include more upper-level grammar.
Page 1 would be the handout to give kids, and Page 2 is the answers to the practice sentences.