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University of Regina (Canada)
University of Regina: Math Central: Shape Preserving Transformations
This is a site that discusses transformations and the processes.
Khan Academy
Khan Academy: Reflect Points
In this exercise, students practice performing reflections on a coordinate plane. Students receive immediate feedback and have the opportunity to watch a video, get hints, or try questions repeatedly.
Thinkport Education
Math by Design: Transformations/reflections [Pdf]
On a coordinate plane students will identify, describe, and plot the results of transformations with guidance provided by this lesson plan.
Alabama Learning Exchange
Alex: Determine the Vertices of Transformed Images
This hands-on lesson uses exploration and discovery to help learners determine the coordinates of the vertices of various figures when translated, rotated, or reflected in a coordinate plane. The exploration phase will access students'...
University of Georgia
University of Georgia: Transformations: Revisiting Congruence
This site presents information on the three basic transformations of figures in a plane: Reflections, Rotations, and Translations.
TeacherLED
Teacher Led Interactive Whiteboard Resource Reflection Drawer
Students will explore the reflection of a shape across the x-axis with this interactive activity.
Mangahigh
Mangahigh: Algebra: Reflect Graphs
Mangahigh is a site that students can learn and practice math skills that are correlated to common core math standards. On this site students practice reflecting graphs of various functions using function notation.
CK-12 Foundation
Ck 12: Geometry: Reflection Symmetry
[Free Registration/Login may be required to access all resource tools.] Find a figure's lines of symmetry.
ClassFlow
Class Flow: Transformations
[Free Registration/Login Required] In this flipchart, students apply multiple transformations to create congruent and similar figures in any or all of the four quadrants. Students apply their geometric sense by using multiple...
ClassFlow
Class Flow: Transformations
[Free Registration/Login Required] This is a simple flipchart to explain the vocabulary of transformations.
University of Cambridge
University of Cambridge: Nrich: Transformation Tease
Follow the directions at this one page website. You will get lots of practice plotting points on the coordinate grid and experience with transformational geometry.
Texas Instruments
Texas Instruments: Exploring Transformations
The students will explore reflections of an object over the x-axis, y-axis, and origin.
Hofstra University
New Functions From Old: Scaled and Shifted
Includes rules, examples, and sample problems on 6 different types of translations; vertical and horizontal shift, stretch, and reflection. Uses six basic functions (x, x^2, x^3, 1/x, x^1/2, and abs(x)) throughout examples, which makes...
CK-12 Foundation
Ck 12: Geometry: Reflections
[Free Registration/Login may be required to access all resource tools.] Recognize reflections as flips and also identify lines of reflection. Includes lots of examples, as well as review exercises. Other sections of the tutorial offer...
Illustrative Mathematics
Illustrative Mathematics: 8.g Reflecting a Rectangle Over a Diagonal
In this task, 8th graders are presented with several rectangles that have diagonal lines through them and are placed on grids. They are asked to draw reflections and to discuss rectangles that are squares. Aligns with 8.G.A.
Khan Academy
Khan Academy: Advanced Reflections
Find the reflection that maps a given figure to another and draw the image of a reflection. The lines of reflection in this exercise have a wide range of slopes. Students receive immediate feedback and have the opportunity to try...
Khan Academy
Khan Academy: Determine Reflections (Advanced)
Given two figures on the coordinate plane, find the formal definition of the reflection that takes one figure to another. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive...
CK-12 Foundation
Ck 12: Interactive Geometry: 8.1 Circles and Similarity
Learn how similarity transformation is one or more rigid transformations (reflection, rotation, translation) followed by a dilation.
Oswego City School District
Regents Exam Prep Center: General "Transformation" Vocabulary
This site offers a short discussion of transformations. The discussion has few pictures and expresses the transformations in terms of relative coordinates rather than pictures.
Other
Nearpod: Geometric Transformations: Rotation & Reflection
In this lesson, learners will learn how to identify, describe, graph, and write geometric reflections and rotations.
Khan Academy
Khan Academy: Congruence and Transformations
Given a pair of figures in the coordinate plane, try to map one onto the other and determine whether they are congruent. Includes examples of glide reflections. Students receive immediate feedback and have the opportunity to try...
Texas Instruments
Texas Instruments: Numb3 Rs: A Group of Symmetries
Based off of the hit television show NUMB3RS, this lesson has students examine a set of transformations to determine if certain properties (such as associativity and closure) exist for equilateral triangles. Students create tables of...
Mangahigh
Mangahigh: Transtar: Reflections, Rotations, Dilations and Translations
For this geometry game, students must guide Transtar, an alien spaceship, across space by applying transformations to it. At the same time, there are dangers to avoid and the number of moves and tries are limited.
Oswego City School District
Regents Exam Prep Center: Reflections: Line and Point
Lesson and activities focusing on line reflection. Here you will find a detailed explanation of the concept with picture examples, opportunities for interactive practice, and supporting classroom activities in the teacher resource pages.