Edcanvas is a free service that makes it easy for teachers to organize and share educational materials in a visually pleasing format. I've covered Edcanvas a couple of times since they launched. Today, Edcanvas launched a new feature that allows you to add audio comments to your canvases. Teachers can insert audio comments and students can insert audio comments.
In addition to the new audio comments feature Edcanvas launched an improved text editor today too. The improved text editor includes the option for tables and hyperlinks.
Applications for Education
In the blog post announcing the new audio commentary option the Edcanvas team suggests using the feature to have students read translations to practice their skills in a new language. You could also use the audio comment option to have students ask questions about shared materials and response to those questions online.