Inches and centimeters? Meters and feet? Lucas can't get measurements for his model airplane quite right, but he knows precision is key. With some swaying from his aunt, a middle school track and field coach, Lucas agrees to help measure high jumps using meters and centimeters. With some practice and dedication, he notes the exact measurements and helps declare the winning jumpers--and completes his model airplane in the nick of time! (Math topic: metric system.)

With engaging stories that connect math to kids' everyday lives, each book in the Teachers' Choice Award-winning Math Matters series focuses on a single concept and reinforces math vocabulary and skills. Bonus activities in the back of each book feature math and reading comprehension questions, and even more free activities online add to the fun!