Amazon.com description: Product Description: Detailed Description Students using Key to Measurement will enjoy a variety of hands-on experiences related to the English system of measurement. Group projects are included in addition to numerous individual activities. In Book 1 students learn how a linear measurement system is developed and then do interesting and fun activities related to measuring length. Book 2 focuses on length, perimeter, and area measures. In Book 3 the concept of area is further developed, and students are introduced to volume. Book 4 covers a variety of topics. Students experiment with weighing objects and measuring capacity, and they also learn about temperature and time. Your students will develop a good understanding of measurement topics, and have fun in the process! This Answer Key provides brief notes to the teacher and gives the answers to all the problems in the workbooks. Format: Paperback Publisher: Key Curriculum Press