Kids Puzzle Sphere

The purpose of this puzzle is for 3D printing education. Puzzles are a good way to introduce kids to 3D printing.
Kids love puzzles and games as long as they can understand them.

I had a few requirements in mind:

1. The puzzle needed to be simple and easy for kids to assemble with small hands and limited dexterity.
2. The print needed to print and finish fairly quick within 30-45 minutes on a well tuned printer when used for 3D printing demos.
3. The design needed to be open to show oth