SchoolTube: A moderated video sharing site designed for K-12 students and teachers Twiducate: A secure microblogging site similar to Twitter, but aimed at elementary and secondary school students Collaborize Classroom: An app that allows teachers to create a password-protected website to post and update classroom curriculums, and add multimedia, documents and charts. Gaggle Apps: Social learning tools designed for K-12 students that include discussion boards, blogs, email, and even a “learning wall” that can all be customized by a teacher.