Sea+Clocks



Sea Clocks, the Story of Longitude by Louise Borden; illustrated by Erik Blegvad; published in 2004

Summary: Read story of John Harrison, the Englishman who worked for many years to create a perfect clock. A clock such as this was needed so that sailors could keep the correct time at sea. Keeping accurate time would help the sailors calculate longitude, allowing them to sail more accurately without getting lost.

Activities: Use maps or atlases to plot locations using latitude and longitude. Have students bring in different types of clocks - test which ones keep accurate time. Time unit - with analog and digital clocks.

Sailing ships - look at books or models of ships from the time of John Harrison.

Weblinks:

[|Time for Time] __[|Xpeditions] __ [|John Harrison] [|Imaging the Earth] [|The Navigators]