Fourth graders discuss the myth of Galileo's experiments in which he threw items out the leaning Tower of Pisa to find out how fast they fell and predict what they think could happen when the two items listed on the same line are dropped...

Students design and conduct an experiment on Galileo's Rule of Falling Bodies. In this physics lesson, students collect and analyze data. They create a presentation and share it with the class.

Students watch an episode of the PBS show "Jay Jay the Jet Plane," and explore magnets and gravity. They conduct various experiments involving magnets and sand, bean bags, and a fishing pole with magnets.

Ninth graders record information on aquatic ecosystems and create a labeled diagram of an ecosystem of their choice. They can choose from an ocean zone, estuary, river, lakes, or beaches. The student has to explain their biome of choice.

In this sentence completion worksheet, students choose the word that best completes each sentence.  Students have 10 minutes to complete 12 questions in this SAT practice worksheet.

For this transitions review worksheet, students practice their grammar skills as they fill in the blanks in 3 paragraphs using the appropriate transitions.

Fourth graders use local materials such as leaves and other plant matter; sand and pebbles to make soil. They plant seeds in the manufactured soil and in natural soil and then observe and record the results.

Students use simple objects to create their own barometer. They have five days to build it and ten days to observe and collect data. They examine thunderstorm safety tips to end the instructional activity.

1. Bring two quarts of moist soil, a cake pan, a sprinkling can of water and a quart of grass clippings to class. 2. Share background material, and introduce the word "erosion." 3. Prepare a small model hill by mounding the soil in the...

In this social studies worksheet, learners read about the resistance of the Dutch people during the time of the Jews captivity.

Students compare and contrast the volcanoes of Earth and Mars, and examine specific volcanoes on Mars. They model the processes that create cone and shield volcanoes, and measure the slope angles of cone and shield volcanoes.

Second graders examine how their choices affect the environment. They identify different types of pollution and its source. They ask questions to end the lesson.

Students demonstrate sound waves and make changes in the waves resulting in changes in pitch. Students associate changes in pitch in various "musical instruments"with size and shape and the sound waves they produce.

Young scholars describe the motion of solids, liquids and gases. In this chemistry lesson, students describe how temperature affect motion of the particles. They determine the physical properties of each phase.

In this El Nino worksheet, students review this specific change in the climate cycle by completing 20 short answer questions.

The US Air Force presents this site as a recruiting tool, providing information on career opportunities, training, and life in the Air Force, as well as giving parents some information about the Air Force as a potential decision for...

Resource provides information at the life and career of General Richard B. Myers.

Read a brief account of the foresight of Brig. Gen. William "Billy" Mitchell (1879-1936), who understood early on that airplanes would play a huge role as a weapon in fighting wars. He is considered the father of the modern air force,...

Covers the meanings of force, friction, and gravity, and the differences between magnetic and elastic spring force, and between weight and mass. The effect of air resistance on an object's motion is also touched upon.

The large scale horizontal flow of air in the atmosphere is driven by the imbalance of net radiation over the globe. This resource introduces us to the physical laws governing the horizontal motion of air. It also describes types of...

Meet the standout soldiers, spies and homefront forces who fought for America, from the Revolution to World War II. During the American Revolution, thousands of Black Americans fought -- on both sides of the conflict. As America's Civil...

Complete history and information page from the development of the U-2 to the present day. Includes great illustrations and helpful tables.

An internet guide to US military history and national security. Includes links to the history of the US armed forces and specific branches as well as information on the different federal organizations involved in national security.

The Library of Congress site profiles 26 American patriotic songs with commentary, supporting visual material, and recordings of "America the Beautiful," "Fanfare for the Common Man" and the like.