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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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4.8 ★★★★★
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Product Reviews
★★★★★ 5
Pups Love
Color: Green, Size: Medium (2-1/2 in, (Pack of 1)), Color: Green, Size: Medium (2-1/2 in, (Pack of 1))
As you can see from the photo, my pup absolutely loves it! It’s the perfect size for him and for reference he’s 25 pounds. It’s got a nice weight to it, but it’s soft enough to be able to throw and not worry about damaging the walls. We just started playing with it today, but it seems very durable.
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Reviewed in the United States on March 27, 2026
★★★★★ 3
Fun for the first day, but just get the round balls.
Color: Green, Size: Medium (2-1/2 in (Pack of 2))
These balls do work, but they bouncy pretty
much like a regular chuck it ball. They do NOT fit in the chuck it handheld ball launcher, which makes them a pain to throw. The green color also makes them somewhat challenging to find when the grass is long.
That said, they do work as intended, and the dogs like them the same as all the other chuck it balls we own. As the person who had to throw them, my advice would be to just get the round balls that fit in the ball launcher.
Durability: 9/10 they hood together better than the traditional balls without the hole (that crack down the seam over time). These have yet to crack despite the same wear and tear.
Pros: durable, dogs like them, they do sink in water
Cons: green color, hard to fit in handheld ball launcher
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Reviewed in the United States on June 3, 2023
★★★★★ 5
Winner!
Color: Green, Size: Medium (2-1/2 in (Pack of 2))
I recently got the BOUNCY DOG BALL TOY for my fur baby, and I'm thrilled to say that it's a total winner! The best feature of this interactive dog toy is its erratic bounce, which keeps my pup on their toes and makes every playtime session full of surprises.
The squared corners of the ball cause it to bounce every which way when thrown, making it an exciting challenge for my dog to catch. And because it's compatible with the Chuckit! Ball Launchers, we can play fetch for hours on end without ever getting bored.
One thing I love about this fetch toy is its durability. It's made of tough rubber that can withstand even the most aggressive chewers, and it's super easy to clean after a long day of play. Plus, with two balls included, we always have a backup when one inevitably gets lost.
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Reviewed in the United States on February 24, 2023
★★★★★ 5
Great toy
Color: Blue
Great toy, too bad my Shih Tzu is afraid of it. I love the way the movement is subtle and random.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Best toy for dogs
Color: Blue
My dog plays with this for hours!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
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