http://www.oercommons.org/browse/keyword/precision daily 1 2000-01-01T12:00+00:00 http://www.oercommons.org/courses/attend-to-precision At Inside Mathematics, we’ve assembled multiple ways for educators to begin to transform their teaching practices. You might be in search of materials and tasks you can use immediately with your students; you can search by grade level and content area below to find core mathematical principles as well as materials developed by the Mathematics Assessment Resource Service (MARS). If you want to develop your understanding of the national Common Core Standards for Mathematical Practice #6, look here. Individual Authors Mathematics and Statistics 2011-11-10T18:26:11 Course Related Materials http://www.oercommons.org/courses/state-your-position To navigate, you must know roughly where you stand relative to your designation, so you can head in the right direction. In locations where landmarks are not available to help navigate (in deserts, on seas), objects in the sky are the only reference points. While celestial objects move fairly predictably, and rough longitude is not too difficult to find, it is not a simple matter to determine latitude and precise positions. In this activity, students investigate the uses and advantages of modern GPS for navigation. Janet Yowell Jeff White Malinda Schaefer Zarske Matt Lippis Penny Axelrad Mathematics and Statistics Science and Technology 2009-11-02T09:52:37 Course Related Materials http://www.oercommons.org/courses/getting-it-right In this lesson, students will investigate error. As shown in earlier activities from navigation lessons 1 through 3, without an understanding of how errors can affect your position, you cannot navigate well. Introducing accuracy and precision will develop these concepts further. Also, students will learn how computers can help in navigation. Often, the calculations needed to navigate accurately are time consuming and complex. By using the power of computers to do calculations and repetitive tasks, one can quickly see how changing parameters likes angles and distances and introducing errors will affect their overall result. Janet Yowell Jeff White Malinda Schaefer Zarske Matt Lippis Penny Axelrad Mathematics and Statistics Science and Technology 2009-11-02T09:52:37 Course Related Materials http://www.oercommons.org/courses/sextant-solutions The earliest explorers did not have computers or satellites to help them know their exact location. The most accurate tool developed was the sextant to determine latitude and longitude. In this activity, the sextant is introduced and discussed with the class. Students will learn how a sextant can be a reliable tool that is still being used by today's navigators and how computers can help assure accuracy when measuring angles. Also, this activity will show how computers can be used to understand equations even when knowing how to do the math is unknown. Janet Yowell Jeff White Malinda Schaefer Zarske Matt Lippis Penny Axelrad Mathematics and Statistics Science and Technology 2009-11-02T09:52:37 Course Related Materials http://www.oercommons.org/courses/close-enough Accuracy of measurement in navigation depends very much on the situation. If a sailor's target is an island 200 km wide, sailing off center by 10 or 20 km is not a major problem. But, if the island were only 1 km wide, it would be missed if off just the smallest bit. Many of the measurements made while navigating involve angles, and a small error in the angle can translate to a much larger error in position when traveling long distances. Janet Yowell Jeff White Malinda Schaefer Zarske Matt Lippis Penny Axelrad Mathematics and Statistics Science and Technology 2009-11-02T09:52:37 Course Related Materials http://www.oercommons.org/courses/computer-accuracy Accuracy of measurement in navigation depends very much on the situation. If a sailor's target is an island 200 km wide, sailing off center by 10 or 20 km is not a major problem. But, if the island were only 1 km wide, it would be missed if off just the smallest bit. Many of the measurements made while navigating involve angles, and a small error in the angle can translate to a much larger error in position when traveling long distances. Janet Yowell Jeff White Malinda Schaefer Zarske Matt Lippis Penny Axelrad Mathematics and Statistics Science and Technology 2009-11-02T09:52:37 Course Related Materials http://www.oercommons.org/courses/formatting-output An explanation of formatting output (to cout) as used within a C++ program. Kenneth Leroy Busbee Science and Technology 2009-06-17T01:07:02 Course Related Materials