Shows the different kinds of isometries and patterns, and gives examples of each kind. Includes definitions, terminology, examples, and problems.

[Free Registration/Login may be required to access all resource tools.] This concept introduces midpoints of line segments.

Based on building a hexagon, this activity from the Math Forum collection focuses on using different combinations of pattern blocks to create a hexagon. An online activity, pencil and paper method, literature connections, and a...

Putt-Putt golf can be a great tool in helping students understand angles and their reflections. Here a teacher demonstrates the "Course," set up in his classroom to assist in explaining to students how to use geometry and angles in...

Lauren Sallan explains why certain fish features are so common, and what it reveals about fish.

Neutralinos, described here, are hypothesized particles of dark matter. Scientists hope to confirm their existence through their research with the Large Hadron Collider. "Explain It In 60 Seconds" is an article series that aims to...

The International Linear Collider, when built, will be larger than the Large Hadron Collider near Geneva. A short description is given here. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the...

Superconductors are materials that offer no resistance to electricity passing through them. They have many applications in science, such as in the Large Hadron Collider. "Explain It In 60 Seconds" is an article series that aims to...

Luminosity, described here, is a scale for measuring how efficiently a collider works. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in particle physics.

Quarks, described here, are particles of matter that cannot be further broken down. Thus they are called fundamental particles. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of...

Light sources are usually synchrotrons, accelerators that are used to produce intense light beams for research purposes. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different...

The Standard Model is the theory scientists use to understand how the universe is constructed. They recognize that it has deficiencies as not everything they observe can be explained with it. "Explain It In 60 Seconds" is an article...

The Higgs boson, a particle hypothesized by Peter Higgs, is described in this article. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in particle physics.

X-ray lasers are produced by electron beams and are extremely intense,. They have important applications in particle physics. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of...

The process of particle acceleration is described. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in particle physics.

Simulations are useful research tools for scientists and save a lot of time and money. Some of the ways they are used are described in this article. "Explain It In 60 Seconds" is an article series that aims to summarize in a few...

Dark matter is still quite a mystery to scientists, who hope to learn more about it through experiments with particle accelerators. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of...

Learn about positrons, an antiparticle and the opposite of an electron. Also available as a PDF, which requires Adobe Reader.

String Theory, a theory about how the universe works, is explained briefly here. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in particle physics.

Particle events, described in this article, are events that can be observed with a particle detector. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in...

Dark energy, described here, is the ultimate mystery for scientists. It is the force that is causing the expansion of the universe they believe. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs...

The definition of a theory as it applied to science is explained in this brief article. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in particle physics.

Jets, described in this article, are particle sprays resulting from other particles colliding at high speeds, such as can happen in particle accelerators. "Explain It In 60 Seconds" is an article series that aims to summarize in a few...

The terascale, described in this article, is a subatomic region that requires enormous amounts of energy in order to reach it. Scientists hope to be able to study it with the Large Hadron Collider. "Explain It In 60 Seconds" is an...