Poptropica is a virtual online world in which kids can travel, play games, math, customize their character, compete in head-to-head competition, and communicate safely with each other.
Bookgoo allows you to highlight and annotate your documents in the same way you would mark up a piece of paper with a highlighter and pen!
STEP 1 - Upload your content
STEP 2 - Highlight and annotate your document
STEP 3 - Share your document with others