The earth is a big place to keep clean. With Litterati -- an app for users to identify, collect and geotag the world's litter -- TED Resident Jeff Kirschner has created a community that's crowdsource-cleaning the planet. After tracking...

In this video, the teacher explains how to outline an informational text by grouping facts into chapters. They emphasize the importance of paraphrasing and using kid-friendly language to engage readers. The teacher guides students...