Zamzar is hands-down the best free tool on the internet! It is so versatile and easy to use. Convert videos and music you find online for later playback sans-internet by saving them to your computer in the format you need them. For example, you can save a YouTube video as an mp3 if you just want the sound. This is essential for teachers who often want to include videos in their lessons but can't access them online at school due to internet restrictions.
Curriki, the online education community, is building the first website to offer free, open-source instructional materials for K-12. We have thousands of free worksheets, lesson plans, exams, project ideas and activities for English language arts, math, science, social studies, technology integration..