'Sixteen years after Barbie dolls declared, "Math class is tough!" girls are proving that when it comes to math they are just as tough as boys. In the largest study of its kind, girls measured up to boys in every grade, from second through 11th. The research was released Thursday in the journal Science."

"Women are now earning 48 percent of undergraduate college degrees in math; they still lag far behind in physics and engineering.

But in primary and secondary school, girls have caught up, with researchers attributing that advance to increasing numbers of girls taking advanced math classes such as calculus."

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