Scratch is a free computer language created by MIT. Go to http://scratch.mit.edu. It is done on your internet browser so no downloading is needed. You must create an account in order to save your work, but you can get started without an account.
After going over the four areas of the Scratch interface, I handed out a step by step lesson for the children to follow at their own speed. I used a lesson I found (and slightly altered) at Edutopia.
I had a lot of fun with this program. I must admit, before it started I was terribly nervous. I had just learned some basics about Scratch before agreeing to do this program. I still only know the basics and that was evident while working with some of the children. Now I need to figure out what I will do for the next Scratch class in the Spring.