School violence is becoming an epidemic in America. How can schools protect their teachers—and teach them how to protect their students? Read an important brochure about how violence affects teachers personally, emotionally, financially,...

This lesson focuses on rigid transformations, a specific set of rules that convert one geometric figure into another one. There are many different types of transformations, like reflections or rotations. It provides several practice...

In this activity students experiment with simulating hair with rigid line segments. They use the controls to change the number of hairs as well as the number and length of segments in each hair. Click and drag to the head to move it.

A rigid motion of the plane is a map of the plane to itself which preserves distances between points. The purpose of this task is to use fixed points as a tool for studying and classifying rigid motions of the plane, i.e., translations,...

From the companion web site for the Contemporary College Physics web site. The collection of pages indexed from this page lead to a variety of useful resources pertinent to Chapter 9 (Rigid Bodies and Rotational Motion) of the book. Such...

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

[Free Registration/Login may be required to access all resource tools.] Recognize transformations as the movement of a figure in a plane

The purpose of this task is to apply translations and reflections to the graphs of the functions f(x)=cos x and g(x)=sin x in order to derive some trigonometric identities. There are also rotations 180 degrees about points on the x-axis...

Kids who are able to think about a problem in a new way engage in flexible thinking, while kids who get stuck in their ways tend to engage in rigid thinking. Flexible thinking skills can be practiced at home and at school. Try a few of...

[Free Registration/Login may be required to access all resource tools.] In this online lesson students will begin to understand what is meant by a rigid body. Learn what torque is and how to use it in solving problems.

Given a description of the effect of a transformation, determine which rigid transformation it is. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.

This task has students link their intuitive notions of symmetries of a triangle with statements proving that said triangle is unmoved by applying certain rigid transformations. The mechanism through which students do this is via...

Incorporating concepts in algebra, number sense, patterning, data collection, and geometry, this instructional activity engages students in various hands-on activities to explore the relationship between regular polygons and the number...

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...

A collection of video lectures from a course introducing students to the mechanics of solids. Webpage includes forty-one lectures from a professor at the National Programme on Technology Enhanced Learning. Lectures vary in length and...

Virtual laboratory provides five hands-on experiments at rigid pendula.

Given a description of the effect of a transformation, determine which rigid transformation it is.

Background image of normal disc-shaped red blood cells from the University of Utah. Inset shows sickled red blood cells, curved and rigid, from the Virginia Medical College.

Experiment with a helium balloon, a hot air balloon, or a rigid sphere filled with different gases. Discover what makes some balloons float and others sink.

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...

This lesson shows elementary students how they can know that rigid motions like reflections, rotations, and translations create a shape congruent to the original.

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...

This MathWorld tutorial provides detailed overviews of the concepts and theorems associated with geometry. Most of the Math World sites are extensive and some require higher math knowledge to understand, links to terms and topics are...

This is a general Physics course from simple concepts such as the rectilinear movement to more complex as the energy bands of solids. Interactivity is achieved by the 646 applets embedded in web pages that are simulations of physical...