Originally Posted by jsb
She excels academically in mathematics (calculus, periodic table etc.), as well as in history and other subjects. There has not been a challenge that she fears tackling,and, often, has not won. My preschooler is only 4-years old!

Could you be more specific about your DD4's level of understanding of calculus? Can she do simple thing like differentiating x^3, or is she advanced enough to understand General Relativity.