Printable graphing worksheets are available at mathworksheets4kids.com, math-aids.com and math4childrenplus.com. Each of these sites provides single-page graphing worksheets that download as PDF files. The sites also provide answer keys.
Math Worksheets 4 Kids provides a number of graphing worksheets appropriate for elementary-age students. Teachers can customize the worksheets by selecting a data topic. The full-color worksheets all include graphics.
Math-Aids.com offers graphing worksheets for elementary through middle school. The selection includes both single- and four-quadrant graphs and graphing activities that form holiday pictures. All of these worksheets allow language selection, and some are customizable by difficulty level.
Math 4 Children Plus has a number of graphing worksheets available for elementary through early middle school, although the majority are for fifth grade and up. These worksheets do not include graphics.