Research shows that a project to use the devices as teaching tools in some N.C. districts has had a measurable impact on student achievement in math.

If North Carolina high school junior Katie Denton struggles with her Algebra 2 homework, she knows she’s not on her own.

Denton can use her school-issued smartphone to send instant messages to her teacher or classmates for help. She can use the same device to connect to the Internet and post an algebra question on a school math blog. Or she can watch student- or teacher-created videos demonstrating algebra concepts on her smartphone screen.

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