The topic is the verb ESTAR.
You have to design a poster (as if you were a teacher), this poster will teach the students about the verb estar that means be.
Example:
Ella quiere estar en tu equipo.= She wants to be in your team.
The other thing that you have to put in your poster is the way to identify location, (I imagine that you have to do it in spanish).
Example:
El niño va a la escuela. The child goes to school. (Your location is the school)
You have to do this poster in one of this sites (the one that you prefer the most) Power Point, Prezi, Microsoft, Sway, etc.
Inclue de 7 locations ( it can be any place that you want) and put pictures to show the locations. Put the name of each location under, beside, in front of, on top of, far from or close to.
Hope this help and luck.