The Raspberry Pi foundation have created tutorials to teach the basics of 3D animation to school children using Blender. These resources are aimed to be distributed through the 10000+ code clubs, worldwide, but they are also available to anyone else who wants to learn. Whilst we keenly await Blender 101, these tutorials show that you don't need children's toys or a simplified version of Blender to get kids making 3D animation!
There are 8 tutorials so far aimed at the 9-13 age group, the material uses simple English (every tutorial can be printed as well as watched), and very short videos (1-5 minutes). The philosophy here is to get children making as soon as possible and avoid the 20 minute intro videos that tell you how the interface works. The tutorials have been adapted from the 3Dami, University of Roehampton, B3D101 and Google CS4HS projects. The same projects are available in several languages on the b3d101.org website.
More tutorials coming soon.