The Geometric Viewpoint is the place for undergraduate mathematical blog essays with a topological or geometric theme. The essays may be written by undergraduates or by others (including faculty) but should be aimed at undergraduate mathematics majors. Submissions may be emailed in LaTex or in WordPress format to Scott Taylor (scott.taylor AT colby DOT edu). We welcome your submissions!
A good mathematical blog essay is somewhat informal, high on motivation and evocative imagery, and probably includes some pictures.