Google has added another choice for inserting images to Docs, Presentations, and Spreadsheets. Use the usual INSERT --> IMAGE command in Docs, and you'll notice another choice in the left sidebar. Click on "Stock Photos," and use the search box. (See two images attached). This works in Docs, Presentation, and Spreadsheet. You will need to be using the new version of Presentation though. Students don't need to leave the documents they are working on to access these stock photos. Although some of your searches may not render images you are looking for, there are a number that work such as: birds, names of specific animals (rabbits, wolf, lion), United States, rivers, George Washington, etc.
Try it out. If you find some keywords that render good results, please post them to the thread in the East K-12 User Group under, "Stock Photos In Google Docs" so others may benefit.
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