MathDL is an online library of mathematics learning materials, primarily at the undergraduate level, created as part of the National Science Foundation’s National Science Digital Library Program (NSDL). MathDL has been developed by the Mathematical Association of America (MAA) in cooperation with Math Forum.

MathDL is divided into three parts: The Journal of Online Mathematics and Its Applications (JOMA), the Catalog of Commercial Products, and the Digital Classroom Resources.

JOMA is a scholarly online journal that contains innovative new web-based learning materials in mathematics, articles on the design and use of such materials, articles on student learning using online materials, surveys of existing online learning materials, and other related articles. Three issues appeared in 2001.

The Catalog of Commercial Materials is a listing of commercially available learning materials in mathematics and its applications. Each listing includes publication information, a short description of the product, a table of contents and preface (where appropriate), and a link to the publisher’s or vendor’s site for more information. For each title, there are a site for reviews and substantive comments by users and a link to a moderated discussion group focused on these particular materials. Currently, there are over 1,500 titles listed. After MathDL is established, publishers and vendors will be charged a yearly fee for their listings.

Digital Classroom Resources contains free online learning materials. These materials have been tested with students and reviewed by the Resource editors. As with the materials in the Catalog, each unit has a link to reviews and substantive comments by users and a link to a moderated discussion group focused on these particular materials. At present there are only a small number of materials listed. Many more will be added shortly.