These probably aren't necessary to do in video form unless you wanted to demonstrate extreme speed or some other aspect of performance, so I'd tend to otherwise submit them as written work samples:
- Video of the child multiplying fractions and reducing them
- Video of the child adding and subtracting fractions after converting to a common denominator
- Video of the child doing long division and multi-digit multiplication
- Video of the child finding area and perimeter of rectangles
I'd consider submitting
all of your ideas in one form or another, though; the more the better, and they all seem comfortably above level without knowing more. I guess it'd be better to show him playing a
good game of chess than just demonstrate the ability to play No Stress Chess or something.
