After I have made sure that my students thoroughly understand what the top and bottom numbers of Time Signatures mean, this is a game that they love to play because I let them pick their own two teams.
This is a Power Point Presentation. The rules of the game are on the first page. Each slide after that has the same Time Signature written on a Rhythmic Staff on the right and left sides of the slide. One person from each team has to write the correct number of the correct kind of notes on the Rhythmic Staff.
You can absolutely use this as Assessment.