Mindomo is a mindmapping tool that is free for teachers. You can use it will Google Drive and the app links with your Google Apps. Will be using this tomorrow with my students.
"Stand up to Cyberbullying
When you hear the word "cyberbullying," the victim and bully come to mind.
What about the bystanders? These silent witnesses play a big part in the vicious
circle of bullying. That's why speaking up has never been more important."