Navigation: Then and Now

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Navigation: Then and Now. Enduring Understanding. Explorers use navigation to get from one place to another. Essential Questions:. How do people get from one place to another? What tools were used in the past for navigation? What tools are used currently for navigation?. Brainstorm. - PowerPoint PPT Presentation


  • Navigation: Then and Now

  • Enduring UnderstandingExplorers use navigation to get from one place to another.

  • Essential Questions:How do people get from one place to another?

    What tools were used in the past for navigation?

    What tools are used currently for navigation?

  • BrainstormBrainstorm ways that people travel from one place to another today as compared to the past.Restart VideoPause Video

  • Tools of Ancient NavigationMapsCompassHourglassBinnacle boxQuadrantKnots cylinderLead LineAstrolabeNavigation has examples of these tools.

  • MapsMaps have been used for centuries to help travelers reach their destination.Ancient maps used:LatitudeDegreesCardinal directionsTry the Anchors Aweigh:Longitude Mapping Game.

  • Consider theFollowing Questions:How can maps be used today?How have maps evolved?What do different maps show?

    Pause VideoRestart Video

  • Suggested Activities Compare a map from Columbuss voyage to a map from today.Plot the locations of various points using the maps.Plot Columbuss voyage to the new world.

  • Suggested ActivitiesCreate a map of your neighborhood.

    Compare your map to a key map of that same area to see the difference between the map designs.

  • CompassThe compass was used to guide travelers on their journey.

    Ancient compasses pointed to magnetic north not true north.Read more on Understanding and Using a Compass.

  • Compass ActivitiesCompare compasses of the past with compasses of today.

    Write a paragraph about the differences between the two and how the compass has been improved.Pause VideoRestart Video

  • HourglassUsed to keep time aboard ship.Explorers were able to track their location by knowing the time and the distance they traveled. Find out more about The History of the Hourglass.

  • Hourglass ExplorationUse plastic soda bottles and sand to create your own hourglass.Brainstorm ways that watches have replaced the use of hourglasses.

  • How was the Binnacle Box Used with the Hourglass?Inside the Binnacle box there is a compass. The compass helps in steering the boat in the right direction. The Binnacle box has half hour time periods marked on the top.

  • QuadrantThis tool was used by Christopher Columbus.It used the suns position to determine latitude.Ptolemys Ptools discusses how Columbus used a Quadrant.

  • Knots CylinderCalculates distance in a set amount of time.

  • Knots per HourTHINK ABOUT ITHow were the knots calculated?

    Calculate knots per hour.

  • Check up :How to Calculate KnotsUse a thirty second time period to calculate knots.There is a knot every 51 feet.There are 120 thirty second time intervals per hour.So. 120 x 51 = 6,120 feet per hour or 1 nautical mile per hour

  • Lead lineThe lead line was used to make maps. Used to measure depth.Collected samples from ocean bottom to help explorers determine location.

  • AstrolabeUsed by Portuguese to determine latitude of navigation.It measures the angle between the horizon and Polaris (North Star).

  • New Developmentsin NavigationTechnology is a dominant part of todays navigation.

    Todays navigation is still based on mathematics.

  • Global Positioning SystemUses satellites 11,000 miles from Earth.To get a latitude and longitude reading you need information from three satellites.Information gathering is much much more reliable and faster.Visit GPS Explained for more information.

  • BrainstormThink of the advances in navigation that you saw in this video.

    With advancing technology, what could be some possible tools of navigation for the future?

  • Moving MapShows where you are and where you are going on an actual map.See Moving Map with Touch Screen Control to see an example.

  • AssessmentWhat are some innovative ways of assessing student understanding of the differences and similarities between ancient and modern navigation?