Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. You probably learned ...
The Simple Piece Of Plastic That Teaches Kids To Tie Their Shoes As a first grade teacher, Eileen Sloan got tired of tying students' shoes, so she invented a plastic tool to lend a helping hand.
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