Freebielicious: Doubles Aren't Trouble!
Flying into First Grade: More FREEBIES!!! Doubles and Weather!!!
Here's a page for working on doubles and doubles +1 facts.
Looking for a way to practice those doubles facts? Try this free printable doubles addition game.
Comments: Great free poster from Mrs. Chappell's 2nd Grade Blog. Very nice visual to help students learn doubles.
2nd Grade Snickerdoodles: Doubles Facts Freebie
Here's a rap for helping students remember the doubles facts.
Doubles Facts- Fun way to reinforce fact fluency. Includes 7 pages!
Do You Know Your Doubles? Free double fact foldable!
A simple practice page for both doubles facts and doubles plus one problems. 7/25/14: I've added a second version which has the doubles plus 1 sum printed.