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

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<ul><li><p>Navigation: Then and Now</p></li><li><p>Enduring UnderstandingExplorers use navigation to get from one place to another.</p></li><li><p>Essential Questions:How do people get from one place to another?</p><p>What tools were used in the past for navigation?</p><p>What tools are used currently for navigation?</p></li><li><p>BrainstormBrainstorm ways that people travel from one place to another today as compared to the past.Restart VideoPause Video</p></li><li><p>Tools of Ancient NavigationMapsCompassHourglassBinnacle boxQuadrantKnots cylinderLead LineAstrolabeNavigation has examples of these tools.</p></li><li><p>MapsMaps have been used for centuries to help travelers reach their destination.Ancient maps used:LatitudeDegreesCardinal directionsTry the Anchors Aweigh:Longitude Mapping Game.</p></li><li><p>Consider theFollowing Questions:How can maps be used today?How have maps evolved?What do different maps show?</p><p>Pause VideoRestart Video</p></li><li><p>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.</p></li><li><p>Suggested ActivitiesCreate a map of your neighborhood. </p><p>Compare your map to a key map of that same area to see the difference between the map designs.</p></li><li><p>CompassThe compass was used to guide travelers on their journey.</p><p>Ancient compasses pointed to magnetic north not true north.Read more on Understanding and Using a Compass. </p></li><li><p>Compass ActivitiesCompare compasses of the past with compasses of today.</p><p>Write a paragraph about the differences between the two and how the compass has been improved.Pause VideoRestart Video</p></li><li><p>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.</p></li><li><p>Hourglass ExplorationUse plastic soda bottles and sand to create your own hourglass.Brainstorm ways that watches have replaced the use of hourglasses.</p></li><li><p>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.</p></li><li><p>QuadrantThis tool was used by Christopher Columbus.It used the suns position to determine latitude.Ptolemys Ptools discusses how Columbus used a Quadrant. </p></li><li><p>Knots CylinderCalculates distance in a set amount of time.</p></li><li><p>Knots per HourTHINK ABOUT ITHow were the knots calculated? </p><p>Calculate knots per hour.</p></li><li><p>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</p></li><li><p>Lead lineThe lead line was used to make maps. Used to measure depth.Collected samples from ocean bottom to help explorers determine location.</p></li><li><p>AstrolabeUsed by Portuguese to determine latitude of navigation.It measures the angle between the horizon and Polaris (North Star).</p></li><li><p>New Developmentsin NavigationTechnology is a dominant part of todays navigation.</p><p>Todays navigation is still based on mathematics.</p></li><li><p>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.</p></li><li><p>BrainstormThink of the advances in navigation that you saw in this video.</p><p>With advancing technology, what could be some possible tools of navigation for the future?</p></li><li><p>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.</p></li><li><p>AssessmentWhat are some innovative ways of assessing student understanding of the differences and similarities between ancient and modern navigation?</p></li></ul>