The importance of the kidneys is most clearly demonstrated in the presence of pathophysiologic states. The kidneys play a central role in the maintenance of the internal milieu by balancing fluid, electrolytes, and hydrogen ions to provide optimal conditions for molecular, cellular, and body system function. They also serve as the major excretory organ for metabolic byproducts, drugs, and other organic substances. Finally, the kidneys are an important endocrine organ, producing vasoactive factor
Exploring Earth: Investigations
This site provides more than 75 earth science investigations. Each presents photos and text (and sometimes video) that help students understand key earth science concepts. Among the topics: earth's layers, rocks, volcanoes and plate tectonics, earthquakes and mountains, surface and ground water, wind and currents, atmosphere and weather, climate change, oceans, our moon and solar system, and earth's history.
The Story of Race in Charlotte Schools
In the 1970s, the public school system of Charlotte-Mecklenburg County in North Carolina was ordered by the federal courts to desegregate. The district then faced busing, lawsuits, protests, and riots during its struggle with the issue of racial quotas. The district is currently coping with the controversial plan to end busing for racial balance and return to a geographically-based student assignment plan. Listen to members of the Charlotte-Mecklenburg community candidly discuss race, desegreg
Busing for Integration vs. Neighborhood Schools
This lesson plan will introduce students to the political, social, and economic issues surrounding school desegregation using oral histories from those who experienced it firsthand. They will learn about the history of the "separate but equal" U.S. school system, the 1971 Swann case which forced Charlotte-Mecklenburg Schools (CMS) to integrate, and the recent decision to discontinue busing for racial integration in Charlotte-Mecklenburg. They will compare and contrast neighborhood schools with s
An introduction to law in contemporary Scotland
Many aspects of the law in Scotland are different from those of England and Wales. Centuries of development and growth have been influenced by factors unique to Scotland, resulting in a legal system that is distinct from those of its neighbours. This unit
Lennard-Jones Potential Model
The EJS Lennard-Jones Potential model shows the dynamics of a particle of mass m within this potential. You can drag particle to change its position and you can drag the energy-line to change its total energy. The Lennard-Jones potential function is a reasonably accurate model of interactions between noble gas atoms. The binding energy epsilon is the depth of the potential well and minimum molecular separation are set equal to unity. This simulation uses uses a natural system of units the m
Strange Harmonic Oscillator Model
The EJS Strange Harmonic Oscillator model displays the motion of two masses connected by a massless rigid rod and the masses may move without friction along two perpendicular rails in a horizontal table. The energy of the oscillator system can be changed via a slider.
Learning Guide: Unit 3 - Care for vulnerable learners
In Unit 3 we place the spotlight on learners and investigate what we mean by vulnerable learners, what challenges they face, and why the school can be such a powerful and positive influence in their lives. We hope that deeper insight into the plight of vulnerable learners will motivate you and your management team to put in place simple information gathering system that enables you to pinpoint accurately who is vulnerable in your school. Dependable management information will enable you to make
Course Outline for Advanced Certificate: Education School Management And Leadership (Word)
This document is the course outline for the Advanced Certificate: Education (School Management And Leadership) programme. The ACE programme is aimed at empowering school leaders to lead and manage schools effectively in a time of great change, challenge and opportunity. It is targeted at serving School Management Team members who aspire to principalship. The programme seeks to provide structured learning opportunities that promote quality education in South African schools through the developmen
Medicine Games: Immune System Defender
Play a game and find out about a Nobel Prize awarded discovery or work! Ilya Mechnikov, one of the pioneers of immune system research, inserted a thorn into a larva and noticed strange cells gathering around the thorn. The cells were eating any foreign substances entering the ruptured skin. He called ...
Medicine Games: Split Brain Experiment
Play a game and find out about a Nobel Prize awarded discovery or work! The brain is made up of two halves, the hemispheres. These hemispheres are united to one another through a system consisting of millions of nerve fibers. Therefore, each hemisphere is continually informed about what is happening ...
Proving (a Theorem) and Disproving (a Theory). Applying the Pythagorean Theorem to Real Life
In this lesson, students share thoughts about careers and gender roles. They then work together to prepare a proof of the Pythagorean theorem and synthesize their learning by preparing a creative representation of Pythagoras' ideas.
The Amana Colonies
looks at the historic utopian society established in the 1850s along the Iowa River by German-speaking settlers from a religious group known as the Community of True Inspiration. The group, which originated in Himbach, Germany, in 1714, created a communal system of living of seven villages, each with ...
The Emerald Necklace: Boston's Green Connection
recounts the creation of a series of parks in Boston in the 1880s. At that time, Boston was crammed with buildings and people. It was overcrowded, noisy, and dirty. City officials, concerned about the health and well-being of Bostonians, hired Frederick Law Olmsted, who had designed Central Park in New York, to create a park system that wove together a series of small parks?gardens, waterways, meadows, tree museums, and others?into what became known as Boston's Emerald Necklace.
Tally of the 1824 Electoral College Vote
This site focuses on the complex system of election rules by examining the vote tally of the 1824 Presidential election, in which the winning candidate, John Quincy Adams, received fewer popular votes than the runner-up, Andrew Jackson.
Digital Earth Workbench: Magnetospheric Pressure
The Digital Earth Workbench is an interactive application that runs on a SGI Onyx Infinite Reality system and is controlled by an Immersive Workbench, tracked stereo glasses, and a tracked wand. The application allows an unprecedented freedom to roam georeferenced datasets at multiple resolutions and ...
Mapping the Watery Hills and Dales
This classroom activity explains and demonstrates how the Global Positioning System satellites work to provide precise location information to positions on the ground, as well as to other satellites whose job is to map the surface of Earth. The activity is specifically tied to NASA's Jason-1 and Topex/Poseidon ...
Exploring Meteorites Mysteries
This program allows educators to borrow meteorite samples and provides a teacher's guide with activities and a slide set to support lessons on the earliest history of the solar system and meteorite impacts on Earth. These educational materials may be borrowed as a package or the guide and/or slides ...
Discovery of the Solar System
This page is part of NASA's website "From Stargazers to Starships". It discusses the evolution of scientific thought concerning the nature of the solar system, beginning with the earth-centered solar system advocated by Hipparchus and Ptolemy. Ptolemy's idea that the sun and planets moved around the ...
Event-Based Science: Remote-Sensing Activities
Event-Based Science (EBS): Remote-Sensing Activities enable middle school students to use remotely-sensed data- as they tackle the real-world problems and tasks found in existing EBS modules. Remotely-sensed data are employed as an integral part of both the presentation of Earth system science concepts, ...