Pale faces, shivers and goosebumps, and perhaps even a few nervous tummies. It’s not a fever; it’s just maths. Kids in India might not be scared of much these days, but maths may send them into panic.

What is the best way to help poor schoolchildren succeed at math? A study now sheds light on the ways preschool activities may -- or may not -- help children develop cognitive skills. What is the best ...