Each unit’s glossary is provided as an additional resource for both teachers and students, to facilitate discussion and perhaps enhance other unit activities. The definitions are not unit specific, but are intended to apply across the STC curriculum. Under no circumstances should students be required to memorize the terms or definitions presented in the glossary. Each glossary is available (in English or Spanish) for downloading in Adobe® Acrobat® format.

STC glossaries may be copied, as necessary, by the teacher in quantities sufficient for the students in his or her classroom. Also for purposes of classroom use only, the teacher may make an overhead transparency of any glossary page. Otherwise, no part of an STC student book or Teacher’s Guide may be reproduced by any mechanical, photographic, or electronic process, or in the form of a phonographic recording, nor may it be stored in a retrieval system, transmitted, or otherwise copied for public or private use without permission in writing from the National Science Resources Center, except for the purposes of official use by the U.S. government.