I use this project when I start my multiplication unit to teach repeated addition, groups of, commutative property, and arrays. You could also replace one with a multiplication word problem and picture.
First Grade a la Carte: Slides and Ladders Goes Math! Adding doubles and multiplying doubles. FREEBIE
Not the grade level or subject I teach, but pinning this for my teacher friends who teach little people to see! :)
Help your kids have fun while learning their doubles math facts with this Domino Doubles Game from Creative Family Fun
Numicon and mirrors to solve doubling questions. (Missamyp)
Might be a good activity for doubling
Exploring doubles- they've loved this today :)