About This Book
This engaging biography introduces young readers to Eratosthenes, a brilliant ancient Greek scholar who served as the chief librarian at the Library of Alexandria. The book beautifully illustrates his ingenious method for calculating the Earth's circumference using simple observations of shadows and geometry. It's a wonderful way to spark curiosity about science, history, and the power of human intellect, showing how one person's careful thought can unlock vast knowledge. Ideal for children aged 4-11, it can be read aloud to younger kids or enjoyed independently by older elementary students.
Discussion Prompts
1
How did Eratosthenes use shadows to figure out the size of the Earth? Can you think of other ways we measure big things?
2
What does it mean to be a 'librarian' and a 'scientist'? How did Eratosthenes use both roles in his discovery?
3
Why do you think it was important for people to know the circumference of the Earth?
4
What qualities do you think Eratosthenes had that helped him make such an important discovery?
5
What other big questions about the world would you like to try and answer, and how might you start?
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