<?xml version="1.0" encoding="UTF-8"?>
<tem xmlns="http://www.teachengineering.org/tem/elements/1.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.teachengineering.org/tem/elements/1.0/ http://www.teachengineering.org/schemas/tem.xsd"><identifier>http://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_navigation/cub_navigation_lesson03.xml</identifier><docType>lesson</docType><format>text/xml</format><language/><title>Navigating by the Numbers </title><creator>Integrated Teaching and Learning Program, </creator><keywords><keyword>approximation</keyword><keyword>calculation</keyword><keyword>geometry</keyword><keyword>navigation</keyword><keyword>surveying</keyword><keyword>trigonometry</keyword><keyword>triangulation</keyword></keywords><vocabulary><word>geometry</word><word>trigonometry</word></vocabulary><summary>Students learn that math is important in navigation and engineering. Ancient land and sea navigators started with the most basic of navigation equations (speed x time = distance). Today, navigational satellites use equations that take into account the relative effects of space and time. However, even these high-tech wonders designed by engineers cannot be created without pure and simple math concepts — basic geometry and trigonometry — that have been used for thousands of years. In this lesson, these basic concepts are discussed and illustrated in the associated activities.</summary><engrConnection>
		
			
				Engineering plays a part in the design and creation of navigational devices that are used for safety and recreation. Math is an essential engineering tool (you don't have to love math, but you do have to know how to "do" math to "do" engineering). Navigational satellites designed and tested by engineers use equations that take into account the relative effects of space and time. Since these satellites often use the sun’s energy to power electronics, engineers must accurately calculate the optimal angle to orient a satellite’s solar array using mathematical concepts such as the Pythagorean Theorem. Engineers use their math skills to calculate the future relative positions of these objects since they are continuously in motion.
				
			
		
	</engrConnection><learningObjectives><learningObjective>Describe how navigation and engineering are based on mathematics  </learningObjective><learningObjective>Describe how the Pythagorean Theorem solves real-world problems.  </learningObjective><learningObjective>Explain the difference between accuracy and precision  </learningObjective></learningObjectives><timeRequired unit="minutes">50</timeRequired><publisher>TeachEngineering.org</publisher><contributors><contributor>Jeff White</contributor><contributor>Penny Axelrad</contributor><contributor>Janet Yowell</contributor><contributor>Malinda Schaefer Zarske</contributor></contributors><references><reference>http://www.utc.edu/~cpmawata/geom/geom2.htm</reference><reference>http://www.staff.vu.edu.au/mcaonline/units/trig/trigraddegrees.html</reference><reference>http://www.utc.edu/~cpmawata/geom/geom7.htm</reference><reference>http://www.utc.edu/~cpmawata/geom/geom6.htm</reference></references><eduStandards><eduStandard><id>S11416DD</id><locale>International_Technology_Education_Association-ITEA_STL_Standards</locale><type>Technology</type><description>F. Knowledge gained from other fields of study has a direct effect on the development of
technological products and systems.</description><lowgrade>6</lowgrade><highgrade>8</highgrade></eduStandard><eduStandard><id>S114172C</id><locale>International_Technology_Education_Association-ITEA_STL_Standards</locale><type>Technology</type><description>C. Many inventions and innovations have evolved using slow and methodical processes of
tests and refinements.
</description><lowgrade>6</lowgrade><highgrade>8</highgrade></eduStandard><eduStandard><id>S11426CF</id><locale>Colorado</locale><type>Math</type><description>b. Use representations of linear functions
to analyze situations and solve
problems
</description><lowgrade>8</lowgrade><highgrade>8</highgrade></eduStandard><eduStandard><id>S114275E</id><locale>Colorado</locale><type>Math</type><description>b. Use the Pythagorean Theorem to find
unknown lengths in right triangles
</description><lowgrade>8</lowgrade><highgrade>8</highgrade></eduStandard><eduStandard><id>S11425BD</id><locale>Colorado</locale><type>Science</type><description>b. Describe methods and equipment
used to explore the solar system and
beyond
</description><lowgrade>8</lowgrade><highgrade>8</highgrade></eduStandard></eduStandards><geoCoverage>United States</geoCoverage><rights>Copyright 2012 - Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder</rights><rights>http://www.teachengineering.org/policy_ipp.php</rights><isPartOf>http://www.teachengineering.org/</isPartOf><created type="W3CDTF">2011-11-30</created><gradeLevel lowerbound="7" upperbound="9">8</gradeLevel><audience>Teacher</audience></tem>

