Here are some great web resources that are free! Keep scrolling!
Veterans Day Resource Guide has great material. The teacher section gives lots of background and ideas for using this in the classroom. The student resources include WWII History, the origins of Veterans Day, the Difference between Veterans Day and Memorial Day, the Tomb of the Unknown Soldier, America's Wars, Respecting the flag,folding the flag and more. There's also a kid's packet that includes a puzzle, a play, maze game, coloring book.
This online poster is perfect for displaying on your projection screen to begin the discussion.
This Holidays in the USA brochure is another online resource for using with kids. Download the PDF and scroll to page 30 for Veterans Day information.
Here's another great resource from the Census Bureau that would be perfect to use to teach an activity that uses the numbers associated with Veteran's Day.
The History Channel has more great resources for Veterans Day. After a brief commercial (mute it) there is a video explanation that is great for showing students.
Whatever you do, be sure to teach about Veterans Day.