Poll Everywhere lets your audience respond using text messages (SMS), Twitter, or the web in real-time. The best part is you can embed live audience responses and live charts right inside your Microsoft PowerPoint presentation, free!

Peterson and Peterson demonstrated that unrehearsed short-term memories for three consonants almost completely decay in as short a time as:

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  • 12 seconds.
  • 1 minute
  • 12 minutes
  • 1 hour
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