Here is my first Tux Paint tutorial. We'll learn how to make bubbles with Tux Paint.
After we download it (by the way, we can also download portable version for Windows here: Tux Paint Portable ), we can start right away.
Now we just open new document and...
And here is tutorial: How to draw bubbles with Tux Paint.
I hope you and especially your kids will enjoy it as much as I did.