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http://theinstitute.ieee.org/tech-history/technology-history/a-history-of-the-magnetic-compass  and https://sites.google.com/a/ucps.k12.nc.us/mrms-7th-grade-social-studies-textbook/the-age-of-exploration/technological-innovations-of-the-age-of-exploration

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Today we will make a compass with a lid, a cork, a needle, and a magnet. This is a simple yet fun experiment to understand magnetism. Fun hands-on science workshop: http://bit.ly/2ha6SeT

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How many direction does the magnetic compass have?

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How many direction does the magnetic compass have?

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The magnetic compass has four to eight directions.

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How will this new invention help sailors?

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How will this new invention help sailors?

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You can go back to your land with the new magnetic compass.

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Let me stop you there because you will never get lost again with the new magnetic compass.