When eight-year-old sleuth Cam Jansen and her friend Eric go to a birthday party, she uses her photographic memory to solve the puzzle of the dinosaur count. A Viking Easy-to Read Book-Level 2 Interest Level: K-3 Reading Level: 2.2 ATOS Book Level: 2.5 AR Interest Level: LG AR Points: .5 AR Quiz: 15250EN Reading Counts Level: 2.2 Reading Counts Points: 2 Lexile Measure: 370 Fountas & Pinnell: J.