This carefully selected Grade 3 collection is based on correlations to grade-level Common Core State Standards for mathematics. Books feature a specific mathematics concept, a problem-solving activity, and "Let's Explore Math" sidebars as well as engaging nonfiction text, supporting graphics, photographs, and key vocabulary. Titles in this 10-book collection include: What Is in the Attic? (Introducing Division); The World of Trade (Number Patterns); My Lemonade Stand (Number Patterns); Natural Measures (Measuring Objects); Getting Ready to Camp (Introducing Division); Tracking Time (Measuring Time); At Risk! (Reading and Understanding Graphs); Timing Races (Measuring Time); Wildlife Scientists (Reading and Understanding Graphs); and At the Fire Station (Measuring Objects)