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Description
The Librarian Who Measured the EarthA perfect introduction to mathematical concepts for young readers, written by a Newbery honor winning author This colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globe's circumference, is just right for budding mathematicians, scientists, historians, and librarians Filled with fascinating details about Eratosthenes's world (and in print since 1994),
A perfect introduction to mathematical concepts for young readers, written by a Newbery honor-winning authorThis colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globe's circumference, is just right for budding mathematicians, scientists, historians, and librarians Filled with fascinating details about Eratosthenes's world (and in print since 1994), kids are sure to flip through the pages time and again.
Binding Type: Hardcover
Publisher: Little, Brown Books for Young Readers
Published: 09/01/1994
ISBN: 9780316515269
Pages: 48
Weight: 1.11lbs
Size: 11.60h x 8.55w x 0.47d
Review Citations: School Library Journal 09/01/1994 pg. 209
Booklist 11/01/1994 pg. 494
Publishers Weekly 07/25/1994 pg. 55
Kirkus Review - Children 08/15/1994 pg. 1131
Hornbook Guide to Children 07/01/1994 pg. 117 - Recommended, Satisfactory
ALA Notable Children's Books 04/01/1995 pg. 1411
SLJ's Best Books 12/01/1994 pg. 24
Booklist 12/01/2003 pg. 679
Accelerated Reader Quiz #/Name: 17324 / Librarian Who Measured the Earth
Reading Level: 5.8 / Interest Level: Lower Grade / Point Value: 0.5
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★★★★★ 5
Lil boy's favorite ball
Style: Recharges, Size: Medium
The squeak gets my little boy every time. The glow factor is under par. I mainly get it because he also enjoys the brighter colors. All of the others be trying to get his ball. Good product just wish it would glow better because our park times are right around sunset.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Chuck it!
Style: Recharges, Size: Medium
My Golden Doodle absolutely loves this ball. His new favorite!
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Reviewed in the United States on April 17, 2026
★★★★★ 4
The glow doesn’t last long, not super bright.
Style: Recharges, Size: Medium
I charge my glow in the dark balls with a black light flashlight, this one was not very bright, and it did not hold the charge very long. Also, with it being green, it was hard for my dog to find in the grass.
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Squeaks and glows
Style: Recharges, Size: Medium
Squeaks. Glows, and labs love them.
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Reviewed in the United States on January 19, 2026
★★★★★ 3
good but no glow
Style: Recharges, Size: Medium
good ball but as others say, the glow in the dark really isn't there.
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Reviewed in the United States on May 14, 2026