1.77 Water Quality Control (MIT)
The course material emphasizes mathematical models for predicting distribution and fate of effluents discharged into lakes, reservoirs, rivers, estuaries, and oceans. It also focuses on formulation and structure of models as well as analytical and simple numerical solution techniques. Also discussed are the role of element cycles, such as oxygen, nitrogen, and phosphorus, as water quality indicators; offshore outfalls and diffusion; salinity intrusion in estuaries; and thermal stratification, eu
Sentence Content for Essays
Learn how to improve sentence content in this video. The instructor talks about sentence structure and vocabulary.
Story Mapping - Mandy and Norbert are afraid to criticize Thorzuul's story. When they apply their knowledge of story structure, they see it is not a story at all.
Checks and Balances
A two minute video that traces the checks and balance system. Delegates agreed that the federal government should be able to act independently, apart from the states. James Madison proposed a government structure with three branches. This video lacks depth, but does give an overall idea of how this system works.
What Does the Heart Do?
This brief video explores the structure of the heart. The narration is accompanied by still images.
How to Write a Haiku Trio
Writing a haiku trio requires writing three haiku poems with the five-seven-five syllable structure and putting them together because of complementing themes. In this video, you get advice from a writer and instructor on how best to write this form of poetry.
Flowers: The Seed Producers
Using the Lily as an example, this clip summarizes flowering plants, their structure and method of reproduction. Clip also explains and labels the parts of the flower. (2:03)
Hamiltonians vs. Jeffersonians
This video about the two party system is accompanied by text. "After the new United States Congress completed its first task of creating a Bill of Rights, it turned its attention to the issue of financing the new government. President George Washington appointed Alexander Hamilton as the Treasury Secretary, and Hamilton took it upon himself to develop an economic structure for the United States that would give the public confidence in the government’s financial affairs..."
Human Anatomy - Brain
This is a narrated, computer-animated video (04:13) that describes the structure of the brain and how the brain works.
How the Body Works : The Limbic System
(This is a 14-second video.) The limbic system, a paired structure, is concerned with memory and emotions. The striped area shows the position of those parts of the limbic system which are hidden by other parts of the brain.
How the Body Works : Units of the Limbic System
The limbic system is a composite structure which lies in the temporal lobes of the brain and in the region of the thalamus. It is concerned with emotions and memory. The amygdaloid bodies are believed to be concerned with aggression. The hippocampus, lying above the parahippocampal gyrus, is concerned with memory. The septum pelucidum is thought to be associated with pleasure reactions. The cingulate gyrus, the fornix and the anterior commissure carry nerve fibers to and from other structures in
Practice GED Testing
A GED prep tutor explains how to practice taking an exam to get a feel for its structure. To practice GED testing, follow the correct timing instructions, use the same type of bubble sheet and take a practice test the day before the formal exam.
A Brief SAT Writing Introduction
This is a very brief, but clear, overview of the structure and scoring analysis of the SAT Writing section. (01:17)
John Steinbeck, Of Mice and Men: Style
he style of a novel is the manner in which the author chooses to
write the novel. The style could, for example, be ironic, where the
author's tone pokes fun at the characters' behaviour. Steinbeck's style is simple; it relies on dialogue, which means direct speech, and
lyrical poetic description. The style is not difficult, it is very
accessible. This is one of the reasons the novel has retained its
popularity. This title will look at the various ways Steinbeck uses
The Nature of Water
This video is accompanied by text: "A key theme in biology is the relationship between structure and function. In order to appreciate the chemical and physical properties of water, we need to understand its molecular structure.
The chemical formula of water is H-2-O, meaning that each molecule of water contains two hydrogen atoms and one oxygen atom. Each hydrogen atom is connected to the oxygen atom with a covalent bond..."
Physical Properties of Water
This video is accompanied by text: "... focus on its physical properties. These include cohesion, adhesion, surface tension, and specific heat. Since the first three are closely related, we'll discuss them together.
Cohesion is the attractive force between similar molecules in the same phase. Water's hydrogen bonds are largely responsible for its cohesion. Cohesion can be thought of as the sum of all the hydrogen bonds in a collection of water molecules. Cohesion has important biological c
Water and Life: Summary
This video is accompanied by text: "Most of water's chemical and physical properties can be traced to its polar structure. This means it has an uneven distribution of electron density. One important implication of the polarity of water is its ability to dissolve ionic compounds and small polar molecules. Water molecules surround the ions or molecules as they dissociate from the crystal. In this example, the more positive end of the water molecule is oriented toward the negative chloride ion, and
Structure of Water
This is a teacher-created, short animation that illustrates the structure of water. English captions appear to explain the images. (03:35) Music by Ben Hammer.
Online information retrieval: identification of measures that discriminate among users with differen
The major goal of this research was to discover those behaviors associated with the process of online bibliographic searching that are correlated with success. In the assumption that more experienced searchers are more successful, the major research objectives were to identify (1) the differences among the searches of users of online systems who have different amounts of overall experience and (2) the differences between the searches of persons with and without experience on the data base being
Mandelbrot and Julia Sets - A Virtual Manipulative
This virtual manipulative allows you to examine and experiment with the infinitely complex structure of Mandelbrot and Julia Sets. There are instructions to the right of the manipulative.