The Glossary is provided at the back of the print workbooks but is provided as a pdf file for teachers in the digital edition.
Teachers can make the Glossary pdf available to students (it's found in the Related Resources box in the sidebar on the main page for each content area unit). Once the file is opened, students can use <control + F> to open the find box. Then they can type in the word they are looking for and the file will jump to that word. This will work whether you open the file online in the browser or have downloaded it.