Concept mapping tools allow you or your students to visually depict a system of relationships by creating a map in which nodes represent ideas or facts, and lines or connectors between nodes represent relationships (for example, cause-and-effect relationships, category and sub-category relationships, and so on).
(Resource: University of Waterloo CTL)
Concept Mapping Tools
- MindMeister (free for up to 3 maps)
- FreeMind (open source)
- Cmap (free)
- Visual Understanding Environment (free)
- Mindomo (free for up to 3 maps)