Hour of Code
But seriously, I don't understand this.
I suggest trying things out on your own before your students start them, just so you have a general idea about what they're doing.
If you're able to figure it out and lead the students through, that's wonderful!
I'M IN. WHERE DO I GO NOW?
BUT WHAT ABOUT APPS???????
Game based coding- can also build "jokes", stories, etc.
Make a robot light up squares. Lots of problem solving.
Game based - Very simple
Primary to Intermediate