As a sixth-grade Social Studies teacher I needed ways to integrate other subject areas into my curriculum. I came across this book while researching for a unit on Ancient Greece. The book has pictures that are vivid and exciting and follow young Eratosthenes throughout his life until the time in which he "measured the Earth" . My students will find its words complex enough to keep them interested but simplistic enough to follow along. This can be integrated well with math lessons dealing with angles and circumference. I found the book to be extremely enjoyable.