Valentine’s Day is almost here, and so is the sugar rush. If you need a quiet, low-prep activity to channel the chaos, these Valentine’s Coordinate Graphing Sheets are your new BFF. They’ll be so busy ...

Explore a wide range of recent research in mathematics. From mathematical modeling to why some people have difficulty learning math, read all the math-related news here.

First, the print head may be clogged or dirty, and you can clean it out through the printer's built-in cleaning routine (which will be detailed in the manual). Alternatively, if your printer's heads ...