Bongo allows students to use audio and video to interact with each other when recording presentations, working on group projects, and participating in asynchronous discussions. The tool allows instructors to evalute the following: body language, audience interaction, group participation, the ability to think and react under timed conditions, and the ability to use and refer to visual aids under live conditions. In addition, the tool allows instructors to give synchronized audio and video feedback. For example, an instructor can listen to a student practicing a foreign language and insert a corrected pronunciation at the exact moment a student makes a mistake. Cost per site.