Book excerpt: Building Vocabulary from Word Roots provides a systematic approach to teaching vocabulary using Greek and Latin prefixes, bases, and suffixes. Over 90% of English words of two or more syllables are of Greek or Latin origin. Instead of learning words and definitions in isolation, students learn key roots and strategies for deciphering words and their meanings across all content areas. Building Vocabulary from Word Roots: Level 4 kit includes: Teacher's Guide; Student Guided Practice Book (Each kit includes a single copy; additional copies may be ordered in quantities of 10 or more); Assessments to support data-driven instruction; and Digital resources including modeled lessons, 50 bonus activities, and more.