Navigation: Then and Now. Enduring Understanding Explorers use navigation to get from one place to another.
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Post on 31-Mar-2015
Slide 1Navigation: Then and Now Slide 2 Enduring Understanding Explorers use navigation to get from one place to another. Slide 3 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? Slide 4 Brainstorm Brainstorm ways that people travel from one place to another today as compared to the past. Restart Video Pause Video Slide 5 Tools of Ancient Navigation Maps Compass Hourglass Binnacle box Quadrant Knots cylinder Lead Line Astrolabe NavigationNavigation has examples of these tools. Slide 6 Maps Maps have been used for centuries to help travelers reach their destination. Ancient maps used: Latitude Degrees Cardinal directions Try the Anchors Aweigh:Longitude Mapping Game. Anchors Aweigh:Longitude Mapping Game Slide 7 Consider the Following Questions: How can maps be used today? How have maps evolved? What do different maps show? Pause Video Restart Video Slide 8 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. Slide 9 Suggested Activities Create a map of your neighborhood. Compare your map to a key map of that same area to see the difference between the map designs. Slide 10 Compass The 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.Understanding and Using a Compass Slide 11 Compass Activities Compare 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 Video Restart Video Slide 12 Hourglass Used 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.The History of the Hourglass Slide 13 Hourglass Exploration Use plastic soda bottles and sand to create your own hourglass. Brainstorm ways that watches have replaced the use of hourglasses. Slide 14 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. Slide 15 Quadrant This tool was used by Christopher Columbus. It used the suns position to determine latitude. Ptolemys PtoolsPtolemys Ptools discusses how Columbus used a Quadrant. Slide 16 Knots Cylinder Calculates distance in a set amount of time. Slide 17 Knots per Hour THINK ABOUT IT How were the knots calculated? Calculate knots per hour. Slide 18 Check up : How to Calculate Knots Use 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 Slide 19 Lead line The lead line was used to make maps. Used to measure depth. Collected samples from ocean bottom to help explorers determine location. Slide 20 Astrolabe Used by Portuguese to determine latitude of navigation. It measures the angle between the horizon and Polaris (North Star). Slide 21 New Developments in Navigation Technology is a dominant part of todays navigation. Todays navigation is still based on mathematics. Slide 22 Global Positioning System Uses 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.GPS Explained Slide 23 Brainstorm Think 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? Slide 24 Moving Map Shows where you are and where you are going on an actual map. See Moving Map with Touch Screen Control to see an example.Moving Map with Touch Screen Control Slide 25 What are some innovative ways of assessing student understanding of the differences and similarities between ancient and modern navigation? Assessment
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