FREE Shipping on orders over $60 | 25% off all items | 30% off orders over $1000 | 35% off orders over $2500

Sea Clocks : The Story of Longitude

by Louise Borden
| Item # Q3349
Sea Clocks : The Story of Longitude Q3349
Format: Picture Book Hardcover
$19.99 $14.99 Save $5.00
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams BMI Educational Services Inc. is a BBB Accredited Business. Click for the BBB Business Review of this Books - New in Dayton NJ

Description

"For hundreds of years ships had been sailing to places far and nearwithout really knowing where they were!"Sailors knew how to measure latitude, their location north or south of the equator, but they could not measure longitude, their location east or west of their home port. Because of this, many lives were lost worldwide. The key to solving this problem lay in devising a clock that could keep absolutely accurate time while at sea, unaltered by rough water or weather conditions. With such a timekeeper sailors would be able to know the time back at their home port and calculate the longitude. But no one knew how to design such a clock.John Harrison (1693-1776), an Englishman without any scientific training, worked tirelessly for more than forty years to create a perfect clock. The solution to this problem was so important that an award of 20,000 pounds sterling (equal to several million dollars today) was established by the English Parliament in 1714. Harrison won recognition for his work in 1773.Together with beautifully detailed pictures by Erik Blegvad, Louise Borden's text takes the reader through the drama, disappointments, and successes that filled Harrison's quest to invent the perfect sea clock.

Product Information

  • AR Level5.5
  • AR Quiz Number77499
  • AR Quiz Points1
  • AuthorLouise Borden
  • Page Count48
  • ISBN100689842163
  • ISBN139780689842160
  • PublisherMargaret K. McElderry Books
  • Year Published2004
  • Grade Level2 - 5
  • Type of BookNon-Fiction
  • SubjectScience & technology: general interest (Children's/YA)
    People & places (Children's/YA)
  • Lexile Level910
  • IllustratorErik Blegvad
  • ImprintMargaret K. McElderry Books

This book is part of these Book Collections

Our school reading collections supply a comprehensive assortment of titles that are perfect for adding depth to classrooms and school libraries.

Everyday Math Collection - Grade 4 - Collection
D1239 | 38 Books
$297.29 Details
Everyday Math Collection - Grade 4 - Collection - BMI Bound
H1239 | 38 Books
$456.80 Details
Everyday Math Collection - Grade 5 - Collection
D1240 | 26 Books
$218.65 Details
Everyday Math Collection - Grade 5 - Collection - BMI Bound
H1240 | 26 Books
$326.93 Details

Ask us about our Custom Book Lists. We can coordinate collections based
on interest, reading level, state standards, and more.

Write a Review

 






Customer Reviews


Proud member of these professional organizations… NCTE International Literacy Association
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams BMI Educational Services Inc. is a BBB Accredited Business. Click for the BBB Business Review of this Books - New in Dayton NJ
Processing