Explore different ways of proving some theorems about lines and angles. Some transformations are used. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.

Definition of congruent. Choose the "here's more" link to see examples of a rotation, reflection and translation.

See if you can figure out which symbols are on which cube face at this one page website. The solution is just a click away once you have your solution in mind.

You will have to use visualization to help you solve this challenge. At this one page website, you will be able to check your solution.

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.

Think about the surface area of a cube. At this one page website, you use that information to complete the challenge. Solutions are offered right at the website.

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...

[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.

Use this applet to choose a shape to rotate around the origin. This could be used to demonstrate what a rotation is, or students could use it to guess what a certain degree rotation will look like.

Definitions are provided line of symmetry, line symmetry, and plane symmetry, and several nice examples are provided that illustrate these definitions.

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...

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.

This site from Stanford University is on the topic of simultaneity in relativity.

At the Food Market there are a lot of shapes. Help Afia find and name the shapes.

A definition and examples of point symmetry, as well as links to information on rotational symmetry, reflection symmetry, transformations, and rotation.

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.

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.

In this set of questions, students practice using an interactive tool to reflect images on a Cartesian grid. Includes hints.

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.

[Free Registration/Login Required] Observe what happens in the change in the type of energy during a reaction in this simulation. After the activity, answer a self-correcting challenge question.

Students are introduced to translations, reflections, and rotations and how to explore them in real-world scenarios.

Students will explore the reflection of a shape across the x-axis with this interactive activity.

[Free Registration/Login may be required to access all resource tools.] Students watch a video and take an assessment on identifying and counting lines of symmetry in various shapes.

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.