The Signing Math Dictionary: A Promising Practice for Teaching
and Learning Math Vocabulary  Printable Version  The Signing
Math Dictionary (SMD) uses the SigningAvatar accessibility
software to provide an illustrated, interactive, three
dimensional (3D) sign language dictionary of standards-based
mathematics terms for students in grades four through eight who
are deaf or hard of hearing.  Funded by a grant from the
National Science Foundation's Research in Disabilities Education
(RDE) program, TERC partnered with Vcom3D, the developer of the
SigningAvatar accessibility software, to create the SMD. In an
effort to make sure their product could be used by students with
a variety of learning styles and preferences, the creators of
the SMD chose to include principles of Universal Design for
Learning (UDL) into their product. They embedded flexibility of
representation, multiple means of expression, and multiple means
of engagement into the SMD as a way to engage students in
exploring the vocabulary they need to