What is Scratch?
Scratch is an on-line program that makes it easy for you to program your own interactive stories, games and animations, through colorful drag-and-drop blocks. It comes with some background images, characters and sounds ready to use, but you can also add your own images and sounds, making it even more fun.
What is Hour of Code?
'The 'Hour of Code is a nationwide initiative by Computer Science Education Week (https://csedweek.org), and Code.org to introduce millions of students to one hour of computer science and computer programming.'