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 * Lesson Plan - Dilations

__Title__: What Happens When We Enlarge Or Decrease The Size Of An Object?

__Description__: This lesson will allow students to discover, understand, and apply the rules to perform dilations on various objects and images. Students will discover and determine if dilation is a transformation that is isometric.

__Duration__: 1 45 Minute Period

__Learning Objectives__: Students will be able to do the following: code 1. Define dilation as a transformation. code

code 2. Apply and write the general notation for any dilations as Dk(x,y)-->(kx,ky). code

code 3. Apply dilations to numerical examples. code

code 4. State, graph and write which properties are preserved under dilations. code

__Materials__: Textbook –AMSCO Math B Handout from Learning Alberta Geometer’s Sketchpad

__Step by Step Procedure__: Students will be given cues through the powerpoint presentation __Differentiated Instruction__:
 * PowerPoint Presentation
 * Animation/Drawing

__Grade Level(s)__: 9th, 10th and 11th Grade

__Support Materials__: Rubrics for projects.

__Related Standards__: Standard MST3: Mathematics (1997) Students will understand mathematics and become mathematically confident by communicating and reasoning mathematically, by applying mathematics in real-world settings, and by solving problems through the integrated study of number systems, geometry, algebra, data analysis, probability, and trigonometry.

Performance Indicator MST3.C.OP3.MB.C: Students use transformations on figures and functions in the coordinate plane.

Standard MST3: Mathematics (2005) Students will: understand the concepts of and become proficient with the skills of mathematics; communicate and reason mathematically; become problem solvers by using appropriate tools and strategies; through the integrated study of number sense and operations, algebra, geometry, measurement, and statistics and probability.

Performance Indicator MST3.IG.GE8.58: Students define, investigate, justify, and apply similarities (dilations and the composition of dilations and isometries). __Submitted By__: Patricia A. Jackson-Mcollough ||

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