Dilations in the Coordinate Plane | 8.G.A.3💗

This video lesson introduces dilations. Dilations are a transformation that changes the size of a figure by enlarging it by a scale factor greater than one or by reducing it by a scale factor less than one. Real world examples are provided. Figures will be dilated about a center of dilation. Instruction is provided to learn to dilate in the coordinate plane with the origin as the center of dilation. Student practice is embedded with modeled exemplar problems.
#geometry
#dilations
#dilateusingascalefactor
#dilateabouttheorigin
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Grade 8 Transformations Unit Playlist - • Transformations UNIT -...
💗 Preparing for the Unit - Review The Coordinate Plane and Graphing
• Getting to the Point: ...
💗Congruent Figures - How to Define and Identify
• HOW to Graph Points (o...
💗Translations - The Mathematical Slide
• How to Perform Transla...
💗Reflections - The Mathematical Flip
• Reflections: Flipping...
💗Rotations - The Mathematical Turn
About the Origin - • How to Rotate Figures ...
About a Vertex/Point
• Rotate a Figure about ...
💗Similar Figure - How to Define, Identify & Use
• Understanding Similar ...
💗Dilations - The Mathematical Change in Size
• Dilations in the Coord...
00:00 Introduction
00:29 Vocabulary
01:56 Dilations in the Real World
02:25 Enlargement - Dilation
02:46 Reduction - Dilation
03:08 Scale Factor - Enlargement
04:31 Scale Factor - Reduction
04:55 Dilated Figures and Images
05:44 Dilations on the Coordinate Plane
08:24 Student Practice #1 - Dilation
09:57 Student Practice #2 - Dilation
CCSS.MATH.CONTENT.8.G.A.3
Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.
CCSS.MATH.CONTENT.8.G.A.4
Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.