You will need Quicktime software to view the movies. This may be downloaded free on the Web.

Many professionals have contacted us over the years in search of a field-specific or "technical" sign for a term used in mathematics or science. This web-based Science/Mathematics Sign Lexicon identifies published sources (books, CDs) where a sign may be found for a term. If an X appears next to the term, this means we have not yet identified a published source that includes a sign.

Many experienced teachers and other professionals have been using signs for some of these terms that may not be found in published sources. If you know of a published source not mentioned in this Lexicon, or if you know a potentially good sign for these terms and you are willing to share it with others in the field, please contact .

In time, depending on our finding additional funding, we may include some sign movies. We have developed a prototype for marine science terms/signs for the National Science Foundation project "Classroom of the Sea". This Pictionary includes sign movies and photographs which can be used as a resource for instruction.

Professionals interested in contributing to this ongoing project may contact

We hope this Lexicon is helpful.

Harry G. Lang
Project Director, Clearinghouse On Mathematics, Engineering, Technology and Science