Tiered Stations in Math!

If you class is anything like mine one activity just won't do.  This week I have been teaching missing addends.  Many students were at different levels and after giving a pre assessment I found and made several stations that were tiered for missing addends. Here is a picture of three stations.  The fourth was a word problem station not pictured here. There is also a guided station with me as well as a fifth station.

Students go to two stations in one day and two the next.  I decide which stations they go to based on their pre assessments and what skills they need to work on and how well they are doing with missing addends.  The stations came from the following places:

Group 1 and 2: The Printable Princess-Let's March Into Spring!

Group 3: Jessica Williams's March Interactive Math Notebook

How do you differentiate your math?