Years ago Vicki Davis tipped me off to a search modifiers poster published by Google. Yesterday, I checked to see if it is still available online and found that anyone can still download it and print it. This Google Search Modifiers Poster (link opens a PDF) could be a great resource to print and hang in your classroom or library. 
Applications for Education
This infographic that I published years ago and the search modifiers poster together make a good set of reminders for students. Print them out and post them in your library, computer lab, or classroom. It should be noted that many of the modifiers featured in the poster can also be found by opening the advanced search menu in Google.

Applications for Education
This infographic that I published years ago and the search modifiers poster together make a good set of reminders for students. Print them out and post them in your library, computer lab, or classroom. It should be noted that many of the modifiers featured in the poster can also be found by opening the advanced search menu in Google.