Good morning!
For historical photos and videos, consider checking out online archives, libraries, or museums that specialize in the history of the number 9. Websites like Getty Images, Library of Congress, or even historical societies might have valuable resources.
For present-day content, platforms like YouTube, Vimeo, or stock photo websites could offer a wide range of visuals related to the number 9 in various contexts.
Good luck with your presentation, and I hope you find the perfect images and videos for your school project