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Simply Science: Scantron testing

One of the rules when you're taking a test on a scantron: bring a Number 2 pencil. It's all because of what we call the pencil lead. It's really made up of clay and graphite.

http://www.kare11.com/video/2310761759001/1/Simply-Science-Scantron-testing http://bcdownload.gannett.edgesuite.net/kare/35140830001/35140830001_2310749263001_thumbnail-for-video-2310761759001.jpg?pubId=35140830001 Simply Science: Scantron testing One of the rules when you're taking a test on a scantron: bring a Number 2 pencil. It's all because of what we call the pencil lead. It's really made up of clay and graphite. KAREtechnologylocalsimply scienceNewssciencemobile 01:13

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