What does 100 look like? Sound like? Feel like? In this video from Curious George, explore the many ways to measure 100 things.

In this video segment from Cyberchase, the CyberSquad replaces a piece of track to get the Madre Bonita Express to the Mother's Day harvest.

In this lesson, students use a guided reading to look at a report on the status of education in North Carolina in 1869, and discuss the reasons given then for why the Governor and Legislature should support educating North Carolina's children. They are provided an opportunity to compare and contrast the 1869 document against their own ideas about the civic duty to attend school through age sixteen, and its relative value to the state and the country.

Examine this graph from FRONTLINE/NOVA: What's Up with the Weather? Web site to see dramatic increases in three greenhouse gases over the last two hundred years.

This video adapted from the Valdez Museum & Historical Archive, explores what happened during the Great Alaska Earthquake of 1964 through original footage, first-person accounts, and animations illustrating plate tectonics.

In this activity, students determine their own eyesight and calculate what a good average eyesight value for the class would be. Students learn about technologies to enhance eyesight and how engineers play an important role in the development of these technologies.

This visualization from NASA shows global rainfall patterns over a 22-year span. It incorporates data from a combination of remote-sensing and ground-based sources.

In this lesson, students expand their understanding of solid waste management to include the idea of 3RC (reduce, reuse, recycle and compost). They will look at the effects of packaging decisions (reducing) and learn about engineering advancements in packaging materials and solid waste management. Also, they will observe biodegradation in a model landfill (composting).

This Wide Angle video features the women of Rwanda who have emerged as outspoken leaders and the great strides they have made toward rights and equality.

This is an ongoing series of lessons to teach the 26 letters of the alphabet through functional skills that can be used on a daily/weekly basis building on and transferring to other educational task. These lessons incorporate coloring, marking, painting, cutting, pasting, creating, listening and following directions.

This lesson uses a familiar fairy tale to teach writing. It is designed to emphasize using varied sentence patterns in writing.

The students will use ACC basketball statistics to practice the process of converting fractions to decimals then to percents and will learn how to create and edit a spreadsheet. They will then use this spreadsheet to analyze their data. This unit is done during the basketball season which takes approximately 15 weeks from the middle of November to the middle of March. Teachers must have Clarisworks to open the sample spreadsheet in the lesson, but may recreate it in another spreadsheet program.

This animated essay from the American Experience Web site explains the difference between alternating and direct electric current and offers in-depth explanations about the role played by a battery, light bulb, wire, and generator. Grades 6-12.

During this activity, students create a working radio by soldering circuit components supplied from an AM radio kit. Since this activity is carried out in conjunction with the associated lessons concerning circuits and how an AM radio works, students should be able to identify each circuit component they are soldering, as well as how their placement causes the radio to work. Besides reinforcing concepts from the lessons, this activity will also teach students how to solder. Soldering is an activity that many engineers perform regularly; by teaching students how to solder, they are able to engage in a real engineering activity.

This lesson is based on the book, "The Tiny Seed", by Eric Carle. This story will be used to introduce the children to the concept that seeds change and grow into plants when conditions in the environment including temperature, light, water and soil are appropriate. Children will learn that plants produce seeds that can become new plants. Through extended activities, the children will experience first-hand the germination of seeds. They will become familiar with the parts of a plant and learn how each part works to produce a healthy plant.

This video segment from Between the Lions stars Theo the Lion reading aloud the story of Abiyoyo, a South African tale packed with suspense, heroic characters, and new words.

This video segment adapted from First Light explains why the highest peak in the Pacific, Mauna Kea, is an ideal site for astronomical observations. Featured are new telescope technologies that allow astronomers to explore the universe in more depth.

Green plants make their own food by a process called photosynthesis. They also use nutrients and water from the soil to grow. Primary consumers (insects, chipmunks, mice and deer) eat green plants.

This segment from Swift: Eyes through Time traces the history military officers and engineers discovering a strange phenomenon in the sky that astronomers now know are gamma-ray bursts.