 Introduction to Algebra
This lesson consists of providing you with a Self-Tutorial on what is algebra, what are variables, constants, coefficients, terms, and expressions. The tutor explains the use of proper notation, how to combine like terms, find the negation of an algebraic expression, how to evaluate an expression (by hand and by using your calculator), and finally, there is a VERY detailed section on how to translate English phrases into algebraic expressions.
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Social:Learn Introduction
An introduction to the Open University's social:learn project.
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Statistics Online Computational Resource for Education and Research
The goals of the Statistics Online Computational Resource (www.SOCR.ucla.edu) are to design, validate and freely disseminate knowledge. Specifically, SOCR provides portable online aids for probability and statistics education, technology based instruction and statistical computing. SOCR tools and resources include a repository of interactive applets, computational and graphing tools, instructional and course materials. The core SOCR educational and computational components include: Distribution
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Online Statistics: An Interactive Multimedia Course of Study
Online Statistics: An Interactive Multimedia Course of Study is an introductory-level statistics book. The material is presented both as a standard textbook and as a multimedia presentation. The book features interactive demonstrations and simulations, case studies, and an analysis lab.
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Introduction to Fractions
Lesson on fractions.  Fractions are introduced and the basics are taught in this video.  Examples problems are shown, solved, and explained with picture representations. More lesson can be found at www.mathwithlarry.com

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Intro to Algebra, Part 6
This video introduces expansion of binomial factors, factoring
expressions, and factoring through grouping (all part of an introduction
to algebra).  An instructor shows some examples on a whiteboard.

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Intro to Algebra, Part 5
This video covers simplifying expressions by combining like terms,
multiplying through parentheses (the distributive property), and
adding/subtracting expressions. Includes examples that a instructor solves on a whiteboard.

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Intro to Algebra, Part 3
A math instructor plays a psychic game with a chart on a white board in order to introduce the concept of algebra.  When he shows his psychic ability he explains how he actually did it using algebra with the example shown on a whiteboard.

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Intro to Algebra, Part 2
A math instructor explains where the name for algebra comes from. He talks about a an old Arabic book whose title includes "al-jabr", meaning reduction (as in algebraic reduction or simplification).  It introduced a lot of the key ideas of basic algebra.

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Intro to Algebra, Part 1
This clip provides a quick introduction to algebra.  A couple of examples are shown on a white board to help students see the idea of how variables and reduction of equations can be useful.

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A Computational Introduction to Number Theory and Algebra
A book introducing basic concepts from computational number theory and algebra, including all the necessary mathematical background.
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Introduction to Science K-6
This provides an overview of the video library.
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Introduction to Twitter for Educators
This slide show presentation is an introduction to Twitter for educators.
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Introduction To Singapore Math
This is a brief introduction (slide show) to Singapore Math.
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Introduction to Persuasive Writing
This is a presentation done by a teacher for 7th and 8th introducing the  persuasive essay.  The teacher talks about what a persuasive essay is, what forms a persuasive essay takes, organizing an persuasive essay, and what information needs to be supplied.

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Introduction to Chemistry
This is one of the longer (but, excellent!) videos on WatchKnow, however, the viewer will see that the video is digestable in small chunks. The video has been cut into small 'segments' or 'chapters' on the side. This is one of the free videos on Educator.com; the rest require a subscription fee.
"This lecture is an Introduction to Chemistry. Instructor will go over Chemistry as an Experimental Science which studies changes in matter and Energy Distribution before delving into Propertie

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Introduction to Exponents
THis video gives a quick review of exponents.  It begins with a review from pre-algebra and then proceeds to explain exponents. The video includes some humor as a teacher and student are seen at the bottom of the screen and the math is written on a large white screen above them. Run time 06:41.
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An Introduction to Exponents
Professor Edward Burger introduces exponents in this video from Thinkwell's online Algebra series. The video uses lecture format and a whiteboard to aid in the explanations.  Run time 01:37.
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Algebra: An Introduction to Exponents
In this very short clip, the instructor, Ed Burger, uses humor to introduce exponents. The instructor is in the corner of the screen while writing equations. (01:51) Clear and easy to understand.
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Introduction to Exponents
This video goes through the vocabulary in exponents and how it is said. This video shows the difference between 5 x 2 and 5 raised to the second power. They show many different examples. Then they show how to write the exponent problem as a word statement. They also discuss a number raised to the zero power. It is introduced by looking at the pattern of numbers. They show that any number, except 0, raised to the zero power is equal to one. Then they go to more complicated problems where two numb
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