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The Librarian Who Measured the Earth, by Kathryn Lasky
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A colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globe's circumference.
- Sales Rank: #228624 in Books
- Brand: Little, Brown Books for Young Readers
- Published on: 1994-09-01
- Original language: English
- Number of items: 1
- Dimensions: 11.25" h x .50" w x 8.88" l, 1.11 pounds
- Binding: Hardcover
- 48 pages
From Publishers Weekly
Newbery Honor author Lasky (Sugaring Time) deserves high marks for her attempt to present formal mathematical concepts in a picture-book format. The result, however, is a somewhat uneven amalgam of fable, history and science that struggles to find an appropriate age group. She tells the story of Eratosthenes, the ancient Greek librarian who figured out how to calculate the circumference of the earth by a sophisticated process involving sun and shadows. In an author's note, Lasky explains that since there is little extant documentation pertaining to Eratosthenes himself, her job as historian became to "responsibly imagine based on what we already know." Unfortunately, the simplistic language and imagery she uses to describe his life contrast awkwardly with the somewhat daunting details of his mathematical innovations. Older readers who can understand abstract calculations might well be put off by such lines as "More than two thousand years ago a very smart baby was born." Hawkes (see The Nose, reviewed above) handsomely illustrates both the mathematical and historical concepts with his signature touch of whimsy. His stunning acrylics add significant interest to the volume. Ages 6-10.
Copyright 1994 Reed Business Information, Inc.
From School Library Journal
Grade 2-5-This picture book covers the life of Eratosthenes of Cyrene, a geographer who estimated the circumference of the Earth in around 200 B.C.. Though he was in fact a librarian, he is famous for his scientific accomplishments. Since little is known about his personal life, Lasky describes his early years in general terms. He liked to ask questions, loved learning at the gymnasium, and sailed off to Athens to further his studies. He became tutor to the son of King Ptolemy III of Egypt, and eventually became the head of Alexandria's magnificent library. Readers don't come to know the subject intimately, but they do get to know his times very well. The narrative is filled with fascinating details about his world. Hawkes's illustrations make a large contribution, as they contain authentic examples of the art, architecture, and social structure of ancient life. His paintings are rich and warm and filled with touches of humor, making the people, as well as their environment, come alive. The pictures combine with the text to give a clear explanation of how the man came to make his key discovery about the Earth's circumference. A fine combination of history, science, and biography.
Steven Engelfried, West Lynn Library, OR
Copyright 1994 Reed Business Information, Inc.
From Booklist
Gr. 3-5, younger for reading aloud. Introducing a person and a period largely unknown to children, this picture-book biography depicts the life of Eratosthenes, an ancient Greek who eventually became the head of the famous library in Alexandria. His most notable achievement was a remarkably ingenious method for measuring the earth's girth. After determining the angles of shadows in two cities and the distance between them, he used geometry to calculate the circumference of the earth.
Illustrating the text with warmth and humor, Hawkes' acrylic paintings capture the period details of the setting and clarify the geometric concepts used in the measurement. The often dramatic compositions vary from page to page, while the sunlit reds, oranges, and yellows glow brightly against the cooler blues and greens. Even unnamed characters look like individuals, with their own concerns and personalities. Hawkes' attention to detail and his occasional visual humor will reward any child who studies the illustrations.
Entertaining as well as instructional, the text presents the man, the story, the geometry, the geography, and the ancient world itself in simple prose. Lasky can be commended for making history so readable. And yet . . . is it history? Is it biography? Or is it fiction?
In the introductory "Author's Note," Lasky explains that there are gaps in our knowledge of Eratosthenes and that "we cannot fill them in by making up facts, but we can try to responsibly imagine based on what we already know, which is what I've tried to do in this book." Unfortunately, the reader has no way of knowing what parts of the book are factual and what parts spring from Lasky's imagination. As a baby, was Eratosthenes really "curious and full of wonder"? Well, probably; most babies fit that description. Did he "crawl across the kitchen floor to follow the path of ants"? Maybe. Did he wonder "why there were beads of water on the cistern in the morning" and "why the stars stayed in the sky"? Or did the author "responsibly imagine" that part? How about the details of school life at the gymnasium in Cyrene? Was Eratosthenes "a real whiz in math" as a schoolboy? Or does Lasky imagine that he must have been a whiz as a child because of his later achievements in the field as an adult?
A more careful wording of the text would separate knowledge from supposition, a fundamental principle of scholarship. When she speaks of Eratosthenes measuring the earth's circumference, Lasky says, "Perhaps he imagined the earth as a grapefruit." The word perhaps makes all the difference. If she had taken that approach from the beginning, this book would be outstanding. As fragmentary as the record may be, there's something special about real history, and readers can sense it.
The old juvenile biographies with invented conversations fell out of favor for good reason. Readers count on nonfiction to deliver the truth: maybe not the whole truth, but nothing but the truth, within the limits of the author's knowledge. Eratosthenes sounds like a fascinating man, but it's difficult to sort out which parts of this book are historically accurate and which are not. The author's and illustrator's bibliographies of 25 books and articles reassure us that they know what is history and what is invention. But in calling the book a biography, the author has a responsibility to let readers know, as well. Otherwise, the book should be placed in the equally respectable category of historical fiction, which also requires enormous research but gives greater range for an author's imagination.
Although flawed in its presentation of the main character, The Librarian Who Measured the Earth belongs in many libraries because it contains an entertaining introduction to the ancient world, a clear explanation of Eratosthenes' measurement of the earth, and remarkably vibrant illustrations. Carolyn Phelan
Most helpful customer reviews
39 of 39 people found the following review helpful.
Great job combining math, history, science & geography!
By ChristineMM
This is a picture book format biography of Eratosthenes, who lived in Ancient Greece, focusing on how he calculated the size of the Earth using a mathematical formula and measurements taken by measuring shadows and length of footsteps from one location to another. Eratostehenes had many roles and talents, one being that he was a mathematician and author of books on several topics. He wrote the first geography book, which included the first map of the world and the first documentation of the size of the Earth.
The publisher says this is for ages 4-8 however the math concept of the formula he used to determine the size of the Earth was too complex for my 6 year old to grasp. The text is long-ish compared to a typical picture book as well, so I think this can extend a little beyond 8 yrs. if it is acting as a brief biography. I am not sure how many chapter book format biographies are out there for kids 9 and up on Eratosthenes, so this may be better than nothing for older kids!
The colorful pictures are nice and really compliment the text, especially when showing how he thought about measuring the Earth and comparing it to a grapefruit. It also addresses the idea of asking questions, curiosity, and making guesses at answers about things in the world that they did not yet know about.
This is a combination of history, math, and geography with a little scientific thought thrown in. It laid out his first questions and theories and how he came up with different ideas to come up with a way to measure a part of the land. We learn about what worked and what failed, leading up to how he finally came to a method that he thought was accurate, and why he thought this formula would work. His computation was about 200 miles off of the distance we measured in this century!
Within the story we learn about what schools were like for boys in Ancient Greece, that books were in scroll format, what libraries were like (and that they were rare) and other tidbits.
There is a bibliography included that can be used for further reading resources as well. This book is also a great example of how one book can cross over several subject areas: math, history, science and geography.
23 of 23 people found the following review helpful.
Great inter-disciplinary material
By A Customer
This is an excellent book for students of all ages! The story of the project to measure the earth well before Columbus reminds student that history has myths. Many people not only knew the earth was round but also about how big it was. Columbus ignored this ancient data and grossly miscalculacted the circumference. This book is a resource for studies across the curriculum. Including history, math, and geography in a fairly easy to read format. The age 4-8 for reading level is not accurate. The reading is probably around intermediate grade level and much of the technical information is secondary school level. It is a super adition to any library.
19 of 19 people found the following review helpful.
Perfect for Middle School Math & "Read Across America"
By MOR
As a teacher, I've used this book for several years as a "read-aloud" in my sixth grade math classroom. I time it with my geometry units. It's a hit every time. The kids truly love it, and ask great follow-up questions. The book explains the math involved in finding the circumference of the earth 2000 years ago. The language and great illustrations make the math easy to understand. Since the students also read mythology in reading class, it's a perfect cross-curricululm connection. In the past two years, I've timed it to coincide with the "Read Across America" movement on March 2.
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