Code.org is engaging, exciting, and motivating for my students. They LOVE it and so do I.
Community Review for Code.org
My Take
I think this is a really great resource for teachers and for students. As the teacher you can set up your class and monitor their progress through different activities. Students can have accounts with usernames and passwords, or they can use "secret words" to log in. My students love the different themed activities and have a ton of fun! I also love that many of the activities allow you to "see the code" by clicking on a button and switching the blocks to the actual code behind them. Wonderful site, I recommend it!
How I Use It
I have used this website for the Hour of Code event and I also allowed students to continue working after that. I've also used it in my 6th grade coding class to help them gain a base understanding of block based coding before we launched into scratch.mit.edu.