Dinosaurs are always a hit, and the illustrations in this one are certainly eye-catching, but what makes this one a real gem is that it tells the story of how those illustrations came to be — how our knowledge of dinosaurs has grown over time as new evidence is discovered, and how scientific illustrators piece together available evidence, and extrapolate from it to create the images we see of these long-ago creatures which no one ever has actually seen.  I think it’s important for students to learn that scientific understanding (heck, most understanding for that matter) is not static, but is based in evidence, and changes as new evidence comes to light.