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Feedback is one of the most powerful influences on student learning. In order for feedback to have a positive impact it should be provided in a timely manner, focus on process, and provide ideas for taking action. You can achieve all of these things using typed comments in Google, but why not make even more of an impact by leaving voice comments? This can be a powerful way to motivate and engage students.

Applications for Education 
These tools can be used by students to provide feedback to their peers or to reflect on their own learning. This would be a great way to have students explain items they have included in a digital portfolio.