Math and Science with Mr Taylor
Project Lead The Way (PLTW)

Don't have Autodesk Inventor at home but still want to use a 3-D modeling software?
Google Sketchup...It is free and very similar to the basics of Autodesk...a good way to stay sharp and another drafting program you can put onto your resume.
Grid Paper Resources:
Isometric Paper
Here are examples of the types of pictorials which would be drawn on the specific grid paper listed as links above the pictures.