Voicethread:
From their site: “Allows instructors and/or students to create, share, and comment on images, Microsoft PowerPoint presentations, videos, audio files, documents, and PDFs, using microphone, webcam, text, phone, and audio-file upload. This is a good alternative to traditional discussion boards, in class discussions, and presentations / speeches.”
Create your account here: https://voicethread.com/join-org/12270328?type=2
Brief Example of Using Voicethread with a Powerpoint (by Mary Johnson): https://voicethread.com/myvoice/thread/12457572/74524220/69604313
Overview of Using Voicethread in Canvas: http://voicethread.com/share/12457572
Training Library: https://voicethread.com/about/library