Final answer:
The definition of project used in the sentence is 'something you are working on'. The teacher needs to project a map in Geography class, meaning they need to display it to the class.
Step-by-step explanation:
The definition of project used in the sentence is a. something you are working on. In this context, the teacher needs to project a map in Geography class, which means they need to display or show the map to the class.
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