Google Presentation Sharing
Set up your document for simultaneous editing.
First create your presentation.
Click the red Create button and choose Presentation.
Prepare the presentation.
Give the presentation a title by clicking Untitled presentation in the upper left corner.
The default setting is widescreen. If you prefer a standard size slideshow, click File and choice Page setup... Change the setting from Widescreen to Standard 4:3.
Click to add a title and subtitle to the first slide. You can also copy and paste or drag and drop images on to the slide.
Add slides.
Add text boxes and any images that you want students to begin with on their slides.
After you have the slide just as you want it when students begin editing it, then right-click the slide's thumbnail left side of the screen. Choose Duplicate slide. Duplicate the slide again until you have the needed number of slides.
Assign slide numbers.
When everyone is done, you have a nice compilation of slides that was collaboratively produced!
Share the presentation.
Change the Visibility options to Anyone with the link.
Change Access to Anyone (no sign-in required) Can Edit.
Click Save.
Copy the link that appears.
Shorten the web address.
A nice place to shorten URLs is tinyurl.com. Paste the URL and select a custom alias. Click Shorten.
Copy the new address and paste it on a slide, write it on the board, or write it down for others to use.
Tips
If a contributor is not logged into Google, then the only way to add an image to a slide is to copy and paste it. Inserting and dragging will not work.
Tell your contributors not to change the background for all slides. They may only change the background for their own slide.
If students have Google accounts, you may want to share the document with them directly instead of making it public.
When all editing is completely, click the Share button and change the Access setting back to Anyone (no sign-in required) Can view.
Up to 100 contributors can simultaneously edit a presentation.