The Key to... series is a fantastic help for students who need additional reinforcement activities in order to solidify their understanding of measurement (English system). Self-paced and self-guided, the small lesson sizes and step-by-step explanations are perfect for remedial students or simply as extra practice. Key to Measurement Student Workbook 1: English Units of Length is the first of four available books; the answer key is sold-separately. Students will learn about different ways to measure, how to measure using a ruler, measuring using fractions on a ruler, drawing lines the correct length, and more. 45 newsprint pages, booklet. Pages are NOT reproducible.