Explode The Code provides a sequential, systematic approach to phonics in which students blend sounds to build vocabulary and read words, phrases, sentences, and stories. Frequent review of previously learned concepts helps increase retention. Each workbook in this series contains exercises that incorporate reading, writing, matching and copying. The consistent format of the books helps facilitate independent work. Explode The Code Book 4 introduces students to compound words, common word endings, and syllabication. Students practice blending sounds to read and write multisyllabic words. The exercises also introduce students to syllable types and the rules of syllabication. In addition, several review lessons are included. Grades 1-3.