Use VoiceThread

VoiceThread is an interactive collaboration tool available in Blackboard that can be used to encourage student discussion and build community in asynchronous learning settings.

Online discussion boards are usually text-based and can sometimes limit the types of conversations in online learning environments, whereas VoiceThread allows instructors to create multimedia content and generate a conversation around it using text, audio, and video. The conversations are not live; they take place whenever and wherever it's convenient for students to participate.