Matthew Albright, (Wilmington, Del.) News Journal 6:48 p.m. EDT March 30, 2015
WILMINGTON, Del. — When fifth-graders in Katy Corey’s class at Carrie Downie Elementary School comb through math problems on their laptops, it looks at a glance like everybody is doing the same thing. But look closer and you’ll find each student’s exercises are a little different.

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