This grade four workbook holds students' interest with the right mix of challenge, imagination, and instruction. The diverse assignments enhance vocabulary while giving students something fun to think about -- from penicillin to poetry. As students complete the workbook, they will increase their working vocabulary and their understanding of English usage. Critical thinking pages include exercises to help develop higher-order thinking skills. Learning is more effective when approached with an element of fun and enthusiasm -- just as most children approach life. That's why the Skill Builders combine entertaining and academically sound exercises with eye-catching graphics and fun themes -- to make reviewing basic skills at school or home fun and effective, for both you and your budding scholars. Book jacket.