Instructional Video
Khan Academy

Khan Academy: Addition Word Problems Within 10

K Standards
The video discusses examples of addition word problems that add small numbers (numbers 10 or less).
Instructional Video
PBS

Pbs: Odd Squad: To Catch a Double

K - 1st Standards
Learn about doubling numbers with the Odd Squad. While babysitting the doubled Debbies, Otto discovers something that might help Olive crack the case and find the missing double.
Instructional Video
PBS

Pbs: Odd Squad: Game Time!

K - 1st Standards
Olive and Otto need to add multiple small numbers together in series. There's only one thing to do: go to the Mathroom.