Welcome to the Signing Earth Science Dictionary (SESD)!

This illustrated interactive 3D sign language dictionary is designed for students in grades 7-12 who are deaf or hard of hearing and use American Sign Language (ASL) in the classroom. It is also intended to serve as a resource for teachers and other professionals who work with students.
• Click Level 1 for terms used in studying Earth science in grades 7-12.
• Click Level 2 for terms often used in studying Earth science in grades 9-12.
• Click All Terms for Levels 1 and 2 combined.
• Click PDF for a list of all the terms in the SESD.

Introductory Movie ( movie with speech , movie with NO speech )

TERC Text, pictures, and interface design © TERC, Inc. All rights reserved.
VCom3D SigningAvatar® animation technology © VCom3D.
All rights reserved.
National Science Foundation The SESD was developed by TERC and Vcom3D and funded in part by the National Science Foundation, Grant # GEO-0913675. All opinions, findings, conclusions, and recommendations expressed herein are those of the authors and do not necessarily reflect the views of the funders.