Whatever size it happens to be, they are all different.
Between the ages of 10-12 the average size of a male brain is 1,440 grams and the average size of a female brain is 1,260 grams. The size of a nine year olds brain is only slightly smaller.
Depends, I guess. :)
About in a girls size, a 4. In a boys size, a 5.
my 3 year old Jenny wears size 9 but most of her friends wears size 11 or 12.
Try Nerf footballs
A 4 year olds shoe size can vary. However, the average shoe size for this age is around sizes 8-10.
Size will be totally dependent upon the individual's measurements and teenagers come in all sizes. There is no size designation for 15-year-olds.
no try pampers size 7
about the girl hand size would probably be 19mm for 18 yr olds and about 13mm. for 10 yr olds.