I'm an old guy and I wish something like this had been available back when I was in the 4th grade. I may have chosen a different path in life. This episode gives me a new appreciation of mathematics and its foundations.
It helps that Dr. Fry is very attractive but she also does an excellent job of presenting the material. The episode also includes other mathematicians views on the subject.
Dr. Fry talks to a mathematics professor who uses music to illustrate how the Greeks recognized the application of math.
My personal view is that children should consume content like this rather than the pop culture trash that rots their brain.