Youtor
Reflections of Exponential Functions Mr Ryan
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=-T9EUgMIpyI
In this video lesson we will learn how to reflect images in the coordinate plane over the x and y axis. We will first identify the line of reflection given in the instructions. We will then determine the distance the original point is from the line of reflection and plot an image point over the line of reflection the same distance. We will reflect one point at a time for the given figure. Each image point or vertex will be labeled with a ' which is read as prime. We will learn the rule for reflecting a point in the x-axis to be (x, y) to (x, -y) and the rule for reflecting a point in the y-axis to be (x, y) to (-x, y). When a point is reflected in the x-axis the x-coordinate remains the same and the y-coordinate the opposite. When a point is reflected in the y-axis the y-coordinate remains the same and the x-coordinate is the opposite. All reflected images are congruent to the original figures which means that all corresponding sides and corresponding angles are equal measures. Student practice is embedded in the lesson with modeled exemplar solutions. • Purchase a set of Guided Notes for students to use as they watch this video OR while you instruct using the Google Slides below - https://www.teacherspayteachers.com/P... • Purchase an Editable Copy of the Animated Google Slides Used to Create this Video - https://www.teacherspayteachers.com/P... • Free Edpuzzle - https://edpuzzle.com/media/634f369293... • Website: www.magicofmath1.com • TPT Resources: https://www.teacherspayteachers.com/S... • #math • #education • #maths • 💗 Preparing for the Unit - Review The Coordinate Plane and Graphing • • Getting to the Point: Reviewing the C... • 💗Congruent Figures - How to Define and Identify • • HOW to Graph Points (on the Coordinat... • 💗Translations - The Mathematical Slide • • How to Perform Translations: The Mat... • 💗Reflections - The Mathematical Flip • • Reflections: Flipping over the x- an... • 💗Rotations - The Mathematical Turn • About the Origin - • How to Rotate Figures in the Coordina... • About a Vertex/Point • • Rotate a Figure about a Vertex in the... • 💗Similar Figure - How to Define, Identify Use • • Understanding Similar Figures | 8.G.A... • 💗Dilations - The Mathematical Change in Size • • Dilations in the Coordinate Plane | 8... • https://www.teacherspayteachers.com/S... • 00:00 Introduction • 00:45 Vocabulary • 02:25 Real World Reflection #1 • 02:55 Real World Reflection #2 • 03:09 Student Practice #1 • 04:00 Student Practice #2 • 04:39 Student Practice #3 • 05:09 Student Practice #4 • 05:55 Reflections in the Coordinate Plane • 07:18 Reflections in the x-axis • 08:49 Rule for Reflections in the x-axis • 10:11 Student Practice #5 • 11:30 Reflections in the y-axis • 12:46 Rule for Reflections in the y-axis • 13:49 Student Practice #6 • 15:23 Student Practice #7 • Common Core Math Standards • Understand congruence and similarity using physical models, transparencies, or geometry software. • 8.G.A.1 Verify experimentally the properties of rotations, reflections, and translations: • 8.G.A.1.A Lines are taken to lines, and line segments to line segments of the same length. • 8.G.A.1.B Angles are taken to angles of the same measure. • 8.G.A.1.C Parallel lines are taken to parallel lines. • 8.G.A.2 Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them. • 8.G.A.3 Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.
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