From: J Leckman
To: Teacher2Teacher Public Discussion
Subject: Re: Graphing
Yes it is correct. The reason the bar graph works is you are measuring the distance of a roll. The roll is a discrete piece of data. You can not have one and a half rolls. You either roll or you don't. You have the distance of the roll itself. So roll three that traveled 3 feet is one discrete piece of data.
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