Google Presentation is a great tool for helping students construct knowledge about a topic as they create. Here is an interactive tutorial designed to demonstrate how to use some of the handy built in features.
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If you are interested in learning more about the features in Google Docs Presentation, you might want to check out my recent post on GettingSmart.com.
Google Presentation for Collaborative Learning
//cdn.thinglink.me/jse/embed.js
Cool Tools for 21st Century Learners 