Back in the 7th grade I remember having a science class that showed some odd looking animated shorts that talked about basic scientific principles. I remembered the name of the shorts was Eureka! and that they were made in Canada. That was enough to track down copies of the shorts on YouTube.
I really liked these cartoons. They were short, less than 5 minutes, and explained things in a simple and well illustrated way. I wonder if they are available on DVD, I’d love to show these to my 6 year old. In the meantime here’s the first episode, Eureka! – Inertia: