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CK-12 Foundation
Ck 12: Dilation in the Coordinate Plane
[Free Registration/Login Required] Students will adjust Frankenstien's face to explore dilation. Click learn more to watch a video and click challenge me to answer a practice question.
Analyze Math
Analyze Math: Reflection Across a Line
Reflect any point, line segment, triangle, or any other figure over one or two lines using this dynamic applet. Points and lines are entered by point-and-click rather than by typing equations or ordered pairs. A very neat exercise to...
Oswego City School District
Regents Exam Prep Center: Dilations
Oswego City School District provides a three link tutorial on dilations. By clicking on each of these links, you will find the definition of a dilation, examples of dilations, and a quiz to test your skills.
Oswego City School District
Regents Exam Prep Center: Intuitive Symmetry: Point, Line, Plane, Rotational
Investigate the concept of symmetry at this test prep site. See detailed definitions and picture examples, answer the questions in the interactive practice pages, and do the classroom activity where students use a digital camera to...
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...
Math Is Fun
Math Is Fun: Definition of Congruent
Definition of congruent. Choose the "here's more" link to see examples of a rotation, reflection and translation.
University of Cambridge
University of Cambridge: Nrich: Dicey
If you can visualize a cube and turn it around in your mind, then this is the challenge for you. This one page website has the solution available to check your thinking.
Khan Academy
Khan Academy: Intro to Rotations
Explains how to perform a rotation using an interactive tool and presents problems to try. Includes a video example. [1:25] Hints are available for the problems.
Khan Academy
Khan Academy: Perform Translations
Use the interactive transformation tool to perform translations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Reflecting Points in the Coordinate Plane
Practice reflecting points across axes on the xy coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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.
Math2
Math2
This is a site for students and teachers of all grade levels. If you are looking for math tables, general information about math topics, or you would like to ask a question, this is the site to visit.
Math Is Fun
Math Is Fun: Point Symmetry
A definition and examples of point symmetry, as well as links to information on rotational symmetry, reflection symmetry, transformations, and rotation.
Khan Academy
Khan Academy: Geometric Definitions
Check your understanding of the definitions of geometry terms in this exercise. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Khan Academy
Khan Academy: Symmetry of 2 D Shapes
Analyze various shapes according to their reflective and rotational symmetries. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Stanford University
Stanford University: Conventionality of Simultaneity
This site from Stanford University is on the topic of simultaneity in relativity.
Other
University of Edinburgh: Glossary of Introductory Computer Graphics Terms
This website, from the University of Edinburgh, provides a lengthy glossary of computer graphics terms written by Olin Lathrop, author of "The Way Computer Graphics Work". This site provides simple definitions of basic terms; no graphics...