Celebrities Sing the Classic Alphabet Song
Different celebrities sing along with this traditional alphabet song. Some of the celebrities include Ray Charles, Susan Sarandon, and Patrick Stewart. Sesame Street Classic. (01:30)
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Identifying Minerals
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Learning outcomes

After studying this course, you should be able to:

  • understand how the linear sequence of DNA within a gene is related to the linear sequence of amino acids of a protein

  • understand how the information in DNA is carried via RNA to make a protein

  • understand how RNA is synthesised from DNA by the process of transcription

  • understand where the processes of transcription and translation occur within the cell.


Author(s): The Open University

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12.490 Advanced Igneous Petrology (MIT)
Advanced Igneous Petrology covers the history of and recent developments in the study of igneous rocks. Students review the chemistry and structure of igneous rock-forming minerals and proceed to study how these minerals occur and interact in igneous rocks. The course focuses on igneous processes and how we have learned about them through studying a number of significant sites worldwide.
Author(s): Grove, Timothy

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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

Burke, Paine and Wollstonecraft
Events in France did much to revive the fortunes of the reform movement after it had declined in the mid 1780s and hostile reactions to the course the revolution was taking stimulated the rapid growth of militant loyalism as public opinion turned against the radicals. The French revolution did produce some changes: * movement spread further down the social scale * was influential in a wider geographical area, not merely confined to the capital. * some radicals were pursuing a new Li
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The Arctic's Sneaky Fox (Part 2)
Snow Fox (Part 2)- (podcast) by Anna Shi (15:00)

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Steven Pinker on Thinking About Our Society
Steven Pinker, author of The Better Angels of Our Nature, delivers a lecture entitled Thinking About Our Society: Why Violence Has Declined. Pinker (Psychology - Harvard University) explores the essence of human nature and what lies behind the statistically unmistakable reduction in violence over the past few centuries.
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Babbage: Climate of change
A look at last week’s climate talks in Paris: what was agreed on, how realistic the goals are and whether there is reason to be optimistic
Author(s): The Economist

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There are more than 800 courses on OpenLearnfor you to choose from
Author(s): The Open University

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Poisson Process - Part 1 - Khan Academy
Introduction to Poisson Processes and the Poisson Distribution. (11:01)
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Why Does Helium Change Your Voice?
Why does sucking on helium make your voice sound funny? See if this question can stump Dr. Charlotte Grayson. Helium is a colorless and odorless gas, and lighter than air.  It changes your voice by altering the environment where sounds are formed. Run time 01:27.
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7.4 Summary of Section 7

Fibres of the cochlear nerve synapse on the cells of the cochlear nuclear complex which is the first station of the central auditory pathway. From here signals are sent to the superior olivary complex, the inferior colliculus, lateral lemniscus, medial geniculate nucleus and finally the auditory cortex. The central role of the auditory cortex is the processing of complex sounds.

Each cochlear nuclear complex receives input from only one ear. In the cochlear nuclear complex are several d
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Basic English Grammar -- Singular and Plural Nouns - ESL
Singular and Plural nouns Singular Noun Definition: When a noun means one only, it is said to be singular. Examples: boy, girl, book, church, box. Plural Noun Definition: When a noun means more than one, it is said to be plural. Examples: boys, girls, books, churches (05:43)

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Facts of Congress - The First Amendment
This provides a brief explanation of the origin of the First Amendment and its meaning. Appropriate for use in classroom, middle school students and above. (01:03)
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Symbiosis by StudyJams
Symbiosis describes a relationship between two organisms in an environment.  There are three main types of relationships:  mutualism, parasitism, and commensalism.  Learn more about symbiosis with this cartoon animation from StudyJams.  A short, self-checking quiz is also included with this link.
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Statistical Mechanics
Elements of the classical and quantum statistics, the partition function, ideal Fermi gas, ideal Bose gas, Ising model and some applications of statistical mechanics.
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History of Mother's Day on Vimeo
This touching video is all graphics with some image of famous women. Is a good video for Mothers Day or for any study of women in history. Some remarkable information.
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Greetings for Special Occasions- Beginner Spanish
This is a video introducing polite and friendly phrases in Spanish that can be used to greet others on special occasions such as Christmas and Easter. The phrases are shown both in English and in Spanish and the Spanish pronunciation is repeated several times.
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1.1 Composition and improvisation in the world's musics

I want to begin with some general issues. Since the words composition and improvisation will play an important role in this chapter, where better to start than with definitions of these two terms?