Also, another nice option this site has is that you can create "courses". For the Thanksgiving lesson, I created a Thanksgiving course and drew several different pictures for different parts of the story. In kindergarten, the attention span is small, so that is why I broke this story up into segments within the course.
I am attaching it free here for you. It was the first one I created and I did it while I was teaching my class, so I had to do some classroom management (you know, the "teacher eye" and some pointing...) while drawing and speaking (and trying to stay on topic with a subject that is at times, difficult for a five year old to understand), so please just enjoy the concept and try it out for your own class. If you like the lesson, you can share it with your class. Each part of the lesson has to be opened separately. There is no "erase" option to "wipe off" the whiteboard, so each scene had to be done separately.
Another really neat option for this site is that you can add a question and answer interaction at the end of the lesson!
I would love to hear how you could use this in your class!