Texas Instruments
Texas Instruments: Transformations, Rotations, Dilations 1
This StudyCards stack tests students' understanding of translation, transformation, symmetry, dilation, and rotation of a point to form images. Teachers require TI StudyCards Creator Software and students will need the StudyCardApp on...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rotating Parabolas
Dr. Math, in a reply to a student question, shows how to derive the equation of a parabola for situations when the line of symmetry is not || to one of the axes.
Lawrence Berkeley National Laboratory
Berkeley Lab: Symmetry in Rotation
Entry offers a brief explanation of rotational symmetry.
University of Regina (Canada)
University of Regina: Math Central: Symmetry and Translations
This University of Regina site gives some history and definitions about translations and symmetry.
University of Cambridge
University of Cambridge: Nrich: Symmetry Challenge
Sharpen your logic, symmetry, and pattern recognition skills while working on this challenge. Solution included.
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Symmetry
Get independent practice working with scientific and standard notation. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
E-learning for Kids
E Learning for Kids: Math: Tea Store: 3 D Shapes and Symmetry
In this tea store, the boxes all have different shapes! What do you know about shapes?
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...
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.
Science U
Science U: Isometries: Rotation
This site from Science U gives good examples of rotational symmetry and some background information about them.
Sophia Learning
Sophia: Rotational Symmetry: Lesson 5
This lesson defines the phrase rotational symmetry. It is 5 of 11 in the series titled "Rotational Symmetry."
Sophia Learning
Sophia: Rotational Symmetry: Lesson 6
This lesson defines the phrase rotational symmetry. It is 6 of 11 in the series titled "Rotational Symmetry."
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Traslaciones, Simetrias Y Giros
In Spanish. In this unit you can learn about movements in the plane: translations, symmetry and rotation.
National Council of Teachers of Mathematics
Nctm: Figure This: Upside Down (Pdf)
What lowercase letters read the same both upside down and right side up? If you have the answer, then you can handle this geometric symmetry math challenge. A one-page activity from the NTCM Math Challenge for Families collection....
Illustrative Mathematics
Illustrative Mathematics: G Co Seven Circles Ii
In this task, seven pennies are placed in a circle so that they are all touching one in the center and their neighbors. Students are asked to find as many rigid motions of the plane as they can which are symmetries of this configuration...
PBS
Pbs Learning Media: Math + Arts: Geometry in Dance
In this activity, students observe symmetry, geometric shapes, and angles in two Early American dances, and then choreograph their own dance with symmetrical figures. Media and teaching materials are included.
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.
Rice University
Rice University: Cynthia Lanius: Polyominoes Fun With Dominoes
For students who have ever played dominoes and Tetris, polyominoes will strike them as a great deal of fun. Teachers will see the educational benefits of working with similar and congruent shapes and rotating them in a plane. Exploration...
Other
Xah Lee: Some Theorems on Rotation and Translation
This site is for the purpose of using proofs for geometry. It helps by giving some useful theorems.
Texas Education Agency
Texas Gateway: Making Conjectures About Congruence Transformations
Given geometric figures on the coordinate plane, the student will apply the definition of congruence, in terms of rigid transformations, to identify congruent figures. The student will also identify and distinguish between reflectional...
University of Illinois
University of Illinois Urbana Champaign: Chickscope Eggmath: The Shape of an Egg
An interactive page offering a view of a rotating egg, information on rotational symmetry, and definitions of related topics.
Curated OER
Ic Teachers: Rotational Symmetry
This website will provide you with a quick review of rotational symmetry. It also has questions and answers to help you understand rotational symmetry.
Curated OER
Ic Teachers: Rotational Symmetry
This website will provide you with a quick review of rotational symmetry. It also has questions and answers to help you understand rotational symmetry.
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