A huge thank you for all the great suggestions. They are well-taken and much appreciated.

I did e-mail DYS and was informed that my portfolio ideas were fine. They did clarify that I did not need to "prove" my child's ability to do the work reflected in the worksheet by taping her doing the same. I also was informed that worksheets completed at home were fine, which helps immensely because we home school.

I still feel like I'm short on projects that show thinking skills, though. The idea of including doodles is fabulous, and I wish I had them to include! My little ones detest any activity that involves something in their hand, so I don't have written work like that. We had to spend a lot of time practicing writing answers to math problems before I could even get independently completed, handwritten worksheets to include. Their lack of adeptness at writing answers did help me get together some solid videos of mental math, though, because they are so used to doing math mentally and quickly.

Thank you for the encouragement to include a video of a chess game. I'll definitely do that.

Thanks again for the encouragement and suggestions!