- What's New
- Getting Started-Schools
Updated Books Compared to Older Editions
The amount of changes in the new editions vary by level. The biggest differences are in Gamma, Delta, Epsilon, and Zeta. These previously had no application and enrichment content, so the new pages are all completely new (making up about 15-20% of the updated Student Workbooks). This is a broad overview of changes that affect all books Primer – Zeta in our 2012 copyright revisions. For specific details and to see sample pages, please go to the section for each level.
What Hasn't Changed: