Grades 9-12

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What Is Tradition? Vietnam

Altars decorated to welcome ancestors home for the New Year, a Mid-Autumn Festival where kids parade through their neighborhoods in masks and receive toys ... take a look at Vietnamese traditions, past and present.

Witnessing the Effects of Length Contraction

Activity

Witnessing the Effects of Length Contraction

When does a 12-inch ruler look shorter than it really is? When it's fast on the move. In fact, at the speed of light, it would shrink to nothing. See length contraction for yourself ... at a safe speed.

Fusion Simulation

Hands-on Activity

Fusion Simulation

Confused about fusion? You won't be once you've completed this experiment, which demonstrates how a strong nuclear force can fuse two protons that naturally repel each other.

How the Sun Works

Activity

How the Sun Works

Talk about a long-term power source. For billions and billions of years, the Sun has been giving off energy that equals 4 x 1026 watts. What keeps the Sun burning so bright?

Classroom Activity

Weightlessness on Earth?

Who said daydreams are a waste of time? One of Einstein's flights of fancy led to the equivalence principle—the knowledge that while an object is in free fall, it's free of gravity's effects.

Einstein Web List

Curriculum Materials

Einstein Web List

Where to begin when a Web search turns up millions of sites about Einstein? Let us point you to some of the best—from Time's person of the century profile to a black hole animation.

A Conversation with Jacques Malavieille

Online Resource, Article

A Conversation with Jacques Malavieille

The mountain-building processes of folding and faulting take many millennia on Earth—and a matter of minutes in the lab. Learn how even small models provide a big-picture view of our dynamic world.

Reference List

Vietnam Book List

Extend your journey of body, mind, and spirit with this list of recommended books. There are kid-friendly titles along with great reads for high school students and adults.

My Fish-Shaped Home: A History of Changes

Young Naturalist Awards Essay

My Fish-Shaped Home: A History of Changes

Did you know that Long Island was once part of a chain of volcanoes? Or that it was part of the tropics—and faced south? Step back in time with this seventh-grader for a look at the forces that shaped this giant sandbar.

When Disaster Strikes

Young Naturalist Awards Essay

When Disaster Strikes

An earthquake prediction when she was young peaked the interest of this eighth-grader from Michigan. While the earthquake never occurred, her fascination continues to this day.

Mars: Past, Present, Future

Young Naturalist Awards Essay

Mars: Past, Present, Future

In the early 1900s, some astronomers believed that the color contrasts on Mars' surface were great oceans. Today we know they are huge dust storms. Track how our knowledge of Mars has changed with this seventh-grader.

Zircon Chronology: Dating the Oldest Material on Earth

Article

Zircon Chronology: Dating the Oldest Material on Earth

The mineral zircon serves as a tiny time capsule, recording geologic events—it's especially useful because the oldest discovered grains (4.2 billion to 4.3 billion years old) are not much younger than the Earth itself.

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