Practice identifying symmetrical shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

This site presents information on the three basic transformations of figures in a plane: Reflections, Rotations, and Translations.

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...

An introductory look at the interactive Geometer's Sketchpad in terms of using it to explore rotations, translations, and reflections. Only a beginner's amount of skill with the program is needed. Exploration questions are given for the...

Use this unit to learn and practice the general procedure for representing curves in the form y=f(x). It provides a more advanced look at polynomial and rational functions with interactive graphs.

Looks at how spirals form in nature when cells reproduce in a flower, for example. An interactive lets students try entering different values to see if they can make a spiral pattern with no gaps. The correct figure would be the Golden...

Mathematics explains the workings of the universe, from particle physics to engineering and economics. Math is even closely related to music, and their common ground has something to do with a Rubik's Cube puzzle. Michael Staff explains...

A virtual program that allows you to create a snowflake with a the click of your mouse.

A unique geometry project that asks students to complete a transformation using a picture. Project includes instructions, examples, and quiz questions.

This site has pictures and information on many different types of polyhedra.

Here are two lesson plans that apply geometric concepts to design objects. The first involves students as a group following step by step instructions on making a kite. After the review of geometry vocabulary, in cooperative groups the...

[Free Registration/Login may be required to access all resource tools.] Identify different types of transformations.

Students explore the concepts of center of mass and static equilibrium by seeing how non-symmetrical objects balance. Using a paper cut-out shape of a parrot sitting on a wire coat hanger, they learn that their parrot exists in stable...

[Free Registration/Login may be required to access all resource tools.] Graph and compare graphs of quadratic functions in the coordinate plane.

This is a resource to teach optics, while building a modified kaleidoscope that will provide 3-dimensional images.

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.

Tessellations are explained and described at this website. Three basic rules are given for creating tessellations.

If it's in the budget you may want to consider purchasing Artlandia SymmetryWorks, a plug-in for Adobe Illustrator. There are two features that incorporate the use of computer technology to create symmetrical patterns. Free seamless...

Describes the characteristics and anatomy of organisms in the phylum Platyhelminthes.

In triangles ABC and ABD, we are given that angle BAC is congruent to angle BAD and angle ABC is congruent to angle ABD. Show that the reflection of the plane about line AB maps triangle ABD to triangle ABC. Aligns with G-CO.B.8.

This reference material introduces the terms and equations related to parabolas in the context of conics. Also, relates concepts to previously-learned material and shows how to 'read' from the 'conics' form of the parabola equation.

The most basic quadratic is y = x2. The general technique for graphing quadratics is the same as for graphing linear equations. The quadratics graph as curvy lines (called "parabolas"), rather than the straight lines generated by linear...

This site gives a definition of angle of rotation and provides some examples. There is also an interactive activity in which a JavaSketchPad page is provided for you to explore rotations. In addition, be sure to follow the links to...

[Free Registration/Login may be required to access all resource tools.] Learn the anatomy of the graph of a quadratic function.