PINS OF INTEREST: Over 500,000 education-related pins are saved to Pinterest every day, according to USC's Rossier School of Education. That's an incredible resource, but how to sift through them? The advent of Pinterest for Teachers, created by Pinterest, Edutopia and teacher bloggers, will only cause the number to grow. In response to the growing number of online resources, USC Rossier and author Leah Anne Levy have launched The Guide to Pinterest for Educators, a handbook that will help teachers curate the most useful set resources.