Are you working on related addition and subtraction facts? Do you have a few little stinkers who think that all they have to do is plug in the same numbers - who cares if the facts are correct? :) I know that I've always had a few (or more!) who need some convincing that they're actually going to have to do some thinking!
Here's a free set of puzzles to help with more practice with addition and subtraction number families.
There are 2 levels: +/- zero and one facts and +/- mixed facts, both with sums through 10. Click on the picture to download it from Google Drive.
If you have some students who could use some extra practice in determining whether related facts are really related, here's a resource that will get them beyond just glancing at the numbers.
In Fact Family Fun, players have to examine four number models on each of the cards and decide whether they're in the same family. This is a good one for whole class (think document camera), small groups, or math centers. A click on the picture will take you right there!
Hope these will be helpful for you!