Do you want to know what being a marine biologist is really like? This career resource strives to provide a realistic look at the marine biology field. It is wittily written and offers lots of practical advice.

A nice tutorial on using the addition property of equality. Provides 4 different example problems that are worked through step-by-step and also provides some practice problems.

Yes, birds can see color and this site delves into pigmentation, color abnormalities, and structural colors of birds' feathers.

This site provides a detailed explanation of the structure of bird feathers. Topics include feather topography, types of feathers, and feathers and flight.

Why do birds molt? How many times a year do they molt? When do birds molt? These questions and more are answered on this comprehensive site.

Striking photos are presented in this colorful site that show the molting stages of the Calliope Hummingbird.

An exercise for English language learners that tests students' survival listening skills and their ability to comprehend common ways of expressing time. Can they hear the difference between 4:15 and 4:50? Do they know what twelve past...

A very interesting site about Seaborg. It contains quotes from him and about him, photographs, and a timeline.

Interactive lesson on U.S. Rationing during WWII uses a 1942 genre painting, Wartime Marketing, for students to study American Life during WWII.

Pigs, rice, nuts, teeth, eggs, feathers - these are all types of currency! This lesson discusses different types of objects that can be used as currency and young scholars will decide what qualities make an effective currency. Included...

This lesson contains the following labs: Rainbows, Refraction with Prisms, and What Color Is It? Students will study light by reading various nonfiction texts and viewing a video lesson. Then students will engage in the following labs:...

NASA teacher's guide to building a Winogradsky Column to study microorganisms. When this guide was first released, students were invited to participate in two webcasts with NASA scientists. The conversations from those webcasts are...

A comprehensive approach to writing coherent paragraphs and knowing how to transition between paragraphs.

Although not as celebrated as many other scientific inventions, the smoothing iron has its own rich history of development stretching all the way from 400 B.C. to the present.

Read about the device used for measuring resistance in a circuit which was discovered in 1843, but had been invented a decade earlier. The inventor's name was not Wheatstone.

Physicist Felix Bloch developed a non-destructive technique for precisely observing and measuring the magnetic properties of nuclear particles. He called his technique "nuclear induction," but nuclear magnetic resonance (NMR) soon became...

Enrico Fermi was a titan of twentieth-century physics. He outlined the statistical laws that govern the behavior of particles that abide by the Pauli exclusion principle and developed a theoretical model of the atom in his mid-twenties....

Chemist Paul Lauterbur pioneered the use of nuclear magnetic resonance (NMR) for medical imaging. He developed a technique, now known as magnetic resonance imaging (MRI), in the early 1970s that involves the introduction of gradients in...

This Physics Classroom tutorial contains a simple animation demonstrating the grounding process for a positively-charged electroscope. The movement of electrons between the electroscope and ground is shown. An explanation accompanies the...

From the Multimedia Physics Studios. An animation of the technique of the induction charging of an electroscope. The movement of electrons through the electroscope is shown. The animation is accompanied by explanations of what is happening.

This lesson offers suggestions to help you fix short, choppy sentences, combine sentences with the same subject, and revise sentences that sound the same. L.11-12.3 Language Functions/Style

This manual was created by 4th grade students at the Alice B. Beal Magnet School in Springfield, Massachusetts, during a learning expedition on rocks and minerals. The expedition included fieldwork to local geological sites and to...

This tutorial offers an animation depicting the induction charging of an electrophorus plate by the process of induction. Animation depicts the movement of electrons between plat and ground. The animation is accompanied by explanations...

Practice using commas as you complete this exercise, which requires you to know your comma rules.