Central Angles
This video explains how a central angle is an angle where the vertex is on the center of the circle and the endpoints are on the circle. The endpoints on the circle are also the endpoints for the angle's intercepted arc. The angle measure of the central angle is congruent to the measure of the intercepted arc which is an important fact when finding missing arcs or central angles. (2:12)
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Inscribed Angles
This video describes how inscribed angles are angles whose vertices are on a circle and that intersect an arc on the circle. The measure of an inscribed angle is half of the measure of the intercepted arc and half the measure of the central angle intersecting the same arc. Inscribed angles that intercept the same arc are congruent. (1:44)
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Angles in Semicircles
If an angle is inscribed in a semicircle, it will be half the measure of a semicircle (180 degrees), therefore measuring 90 degrees. This video describes how angles in a semicircle can be used to find missing missing angles and lengths. Pythagorean's theorem can be used to find missing lengths (remember that the diameter is the hypotenuse). Also, the measure of an angle formed by a chord to a tangent is half the intercepted arc. (2:08)
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Pi Mathematical Pi Song (Full Version)
This Is The Full Version Of The Pi Pi Mathematical Pi Song! Written by Antoni Chan and Ken Ferrier. Note, this is not mine.
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PI Song (Each and Every Time)
Video is a song about pi.  It talks about who discovered it and what it measures.
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Lose Yourself in the Digits - Song
This music video is to the tune of Eminem's "Lose Yourself" and teaches about the concept of Pi.  Lyrics are not included on the screen but can be found at www.teachpi.org.  The lyrics in the chorus are, "You better lose yourself in the digits of pi.  It's a high but you got a thousand more to go.  The numbers do not stop or drop into pattern, no. To memorize it would take most of a lifetime." (04:26)
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How to Understand Pi
How to Understand Pi - This tutorial will help the viewer understand the concept of Pi. (02:52)
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Congruent Figures
A teacher narrates a slide show explaining what makes two figures congruent.
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Redefining the Wall: Architecture, Materials and Macroelectronics
As a principle element of architecture, technology has allowed for the wall to become an increasingly dynamic component of the built environment. The traditional connotations and objectives related to the wall are being redefined: static becomes fluid, opaque becomes transparent, barrier becomes filter and boundary becomes borderless. Combining smart materials, intelligent systems, engineering, and art can create a component that does not just support and define but significantly enhances the ar
Author(s): Ataman, Osman; Rogers, John; Ilesanmi, Adesida

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7.06 Cell Biology (MIT)
This course deals with the biology of cells of higher organisms: The structure, function, and biosynthesis of cellular membranes and organelles; cell growth and oncogenic transformation; transport, receptors, and cell signaling; the cytoskeleton, the extracellular matrix, and cell movements; chromatin structure and RNA synthesis.
Author(s): Ploegh, Hidde,Orr-Weaver, Terry

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

Exploraci?n de relaciones entre analog?as y bocetos durante la generaci?n de ideas en dise?o industr
An exploration on the analogy-based idea generation process in industrial design is reported. In particular we try to identify relationships between the sketching process and the analogy building in order to elicit requirements for a supporting software. We use concurrent think aloud protocols to obtain experimental data and an extension of a proved content oriented schema to analyze them. Statistical analysis on segments containing .analogical chains. found relations between analogical and desi
Author(s): Andr?s S. Rodr?guez

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Martin Luther Sparks a Revolution
This three minute video explains the German monk's questioning of Catholic dogma that leads to the Protestant Reformation though his questioning of the values of the Catholic Church and its sale of indulgent behavior. A good biography.
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Reformation Series #1- Martin Luther
This video looks at the life of Martin Luther. Video shows pictures and words are written on the screen.
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Angles of Parallel Lines - Khan Academy

Angles of a transverse line when you intersect parallel lines are discussed in this video.   Video discusses parallel lines and what a transverse line is.  Video then goes into labeling the angles, such as corresponding angles, opposite angles, alternate interior angles, alternate exterior angles, and supplementary angles.  The video shows how to find the measurement of each of the angles using what you know about
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h-BN inclusion in a β-Si3N4 grain
The micrograph shows h-BN inclusion (precipitate) in a β-Si3N4 grain (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and react with Si3N4 to form BN. Such
Author(s): DoITPoMS, University of Cambridge,Dr K M Knowles,

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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Faculty Panel: Policy and History (Part 2)
Featuring Walter Block, Thomas DiLorenzo, Guido Hülsmann, Robert Murphy, Timothy Terrell, Mark Thornton, and Thomas E. Woods, Jr. Recorded at the Mises Institute in Auburn, Alabama, on 25 July 2014.

Promo - One Minute Romanian
Hello! My name is Roxana and I'd like to welcome you to One Minute Romanian from the Radio Lingua Network. In this podcast I'm going to be teaching you the basics of Romanian. The great thing about this language course is that you'll be learning all you need to know in just 60 seconds - or thereabouts! Each one minute language lesson will equip you with just enough Romanian to help you get by in lots of situations, either on holiday, or on a business trip to Romania, or just to impress your Roma
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Testid üldbioloogiast gümnaasiumile
17 testi gümnaasiumile üldbioloogia kordamiseks
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Female desert bighorn sheep in the Sonora desert
Desert bighorn sheep use a lot of energy to regulate their internal temperature in the desert. During the summer the sheep eat plants and drink water every few days. In the winter, desert plants contain enough water for sheep survival.
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Diversity and compounding for enhanced discrimination of breast masses in ultrasonic B-scan images
Ultrasonic tissue characterization aims at improving the ability of ultrasound to classify benign and malignant masses. The akagami distribution was recently proposed to model the statistics of the envelope of the backscattered echo from tissue. Its parameters demonstrated an ability to discriminate benign and malignant masses in breast tissue. However, there is a need to improve the performance of the parameters to reach clinically acceptable standards and also to eliminate any influence of var
Author(s): Dumane, Vishruta Ajitkumar

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