[caption id="attachment_65144" align="alignleft" width="199" caption="Panasonic's PT-ST10 is an extreme short-throw projector that needs less than two feet to operate."][/caption]

Not every classroom is a vast lecture hall. There are many small rooms in schools and colleges that serve as meeting spaces—confined areas where projectors must be placed just a few feet away from a surface.

Casting a large, clear picture on a screen or wall is rarely a challenge in the most spacious of lecture halls; instructors can place their projector as far back into the room as needed to get...

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