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121. Introduction To Algebra
Offers clear definitions and easyto-understand examples. Each definition builds on the previous to present a straightforward introduction to algebraic concepts.
http://www.mathleague.com/help/algebra/algebra.htm
Introduction to Algebra
Variables
Expressions

Equations

Solution of an equation
...
Math Contests
School League Competitions Contest Problem Books Challenging, fun math practice Educational Software Comprehensive Learning Tools Visit the Math League
Variables
A variable is a symbol that represents a number. Usually we use letters such as n t , or x for variables. For example, we might say that s stands for the side-length of a square. We now treat s s . The area of the square is given by s s . When working with variables, it can be helpful to use a letter that will remind you of what the variable stands for: let n be the n umber of people in a movie theater; let t be the t ime it takes to travel somewhere; let d be the d istance from my house to the park.
Expressions
An expression is a mathematical statement that may use numbers, variables, or both. Example: The following are examples of expressions: x y z z Example: Roland weighs 70 kilograms, and Mark weighs k kilograms. Write an expression for their combined weight. The combined weight in kilograms of these two people is the sum of their weights, which is 70 + k Example: A car travels down the freeway at 55 kilometers per hour. Write an expression for the distance the car will have traveled after

122. Algebra Answers - Algebra Help - Algebra Tutoring
algebra Answers provides algebra help through detailed solutions and explanations to algebra and math problems. Pay per enquiry.
http://www.algebraanswers.com/
About AlgebraAnswers.com AlgebraAnswers.com is a math help site dedicated to providing detailed, step-by-step solutions to help increase the understanding of algebra for students. Algebra help is provided for students in Algebra I, II, College Algebra, intermediate, and pre-algebra courses. Algebra problems are solved by a chemical engineering graduate who has extensive math tutoring experience. Simply submit your math problems to AlgebraAnswers and a fully explained step-by-step solution will be e-mailed or faxed back to you. How to Use AlgebraAnswers.com Step 1: Submit your problems via fax or e-mail. Be sure to include specific problem instructions and that the problem is typed with correct syntax (see Help page for pointers). Detailed explanations are $3 each (graphing, multiple part problems, and word problems may be $4-$5 which would be explained in your confirmation). If you just need the steps without detailed explanation, this can be provided for $2 a problem. Step 2: Receive confirmation that problems have been received and your total.

123. MathPage Free Algebra Help Tutoring
Organized, easy to understand, help with math, specifically algebra
http://www.homestead.com/stroh/mathpage.html
Javascript is either disabled or not supported by this browser. This page may not appear properly. This site contains all the material covered in the Alg I and Alg II curriculum. Much of the material is interactive so that you can get explanations, examples, practice problems with hints and answers. My students have helped to create this site by finding links, taking and scanning pictures, and designing the banner that is used for the Link Exchange. Contact Mr. Stroh by email. Download FREEware tutorials for Algebra. Look for the Interactive, self paced tutorials. This is GREAT!! This page was last updated on: October 29,
This site hit Download FREEware tutorials for Algebra. Look for the Interactive, self paced tutorials. This is GREAT!! This site contains all the material covered in the Alg I and Alg II curriculum. Much of the material is interactive so that you can get explanations, examples, practice problems with hints and answers. My students have helped to create this site by finding links, taking and scanning pictures, and designing the banner that is used for the Link Exchange. Contact Mr. Stroh by email.

124. Math_Tutor
Homework help with high school and college algebra, geometry, trigonometry, calculus, statistics and finance. Includes email address and emergency phone numbers.
http://www.geocities.com/borrork007/Math_Tutor.html?1013555623293

125. Scirus - Search Tips
OR trigonometry will return results that either contain the word algebra or the Youmay need a subscription or online registration to access this information.
http://www.scirus.com/srsapp/tips/
Basic Search Advanced Search Search Preferences Search Tips General Search Tips Basic Search Tips Advanced Search Tips Results Page Tips ... Subscribe to Scirus News Updates General Search Tips To perform a search with Scirus, enter your keyword(s) in the box provided and click on the Search button. You may find it helpful to narrow your search by placing special characters in front of your keywords: + keyword(s) - all of your search results will contain this word - keyword(s) - none of your search results will contain this word "keyword(s)" - all of your search results will contain this phrase Scirus also recognises Boolean terminology: OR AND NOT AND - your search results will contain all of your keywords. For example, a search on women AND health will return results that contain the words women and health in the text. OR - your search results will contain at least one of your keywords. For example, a search on algebra OR trigonometry will return results that either contain the word algebra or the word trigonometry in the text. ANDNOT - your search results will contain one of your keywords but not the other. For example, a search on gas ANDNOT helium will return results that contain the word gas in the text but not the word helium.

126. Statistics And Math Tutor
help with statistics, algebra, geometry and test preparation by phone, fax, or Email. Includes education and tutoring experience.
http://www.stats-help.com/
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127. Homework Helper Refdesk.com
National Geographic Homework help Need to know how much Think of it as an onlinecalculator that solves equations and does all sorts of algebra and calculus
http://www.refdesk.com/homework.html
Search Net Facts Subject Index Facts Encyclopedia Newspapers USA/World ...
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Search Tips

Help Support Refdesk

MY HOMEWORK HELPER Grades 1 - 6 Grades 7-8 Grades 9-12 College ... Other Homework Links ELEMENTARY - Homework Help For Grades 1 - 6 Homework Center READING
  • Children's Literature Web Guide - Massive and well-organized, with links to nearly every worthwhile children's reading site. WRITING
  • Common Errors in English - A concise list of the most common errors in English usage ARITHMETIC
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  • BJ Pinchbeck's Homework Helper: English
  • Authors on the Web - A Collection of Biographical Sketches SOCIAL STUDIES
  • 4 Kids.com - Excellent government and history links.
  • The 50 States of the United States - A quick resource for fun facts about each of the nation's 50 states, including when they achieved statehood SCIENCE
  • Amateur Science
  • Mad Scientist Network - The mad scientists from Washington University Medical School in St. Louis will answer questions in 25 areas of science, from anatomy and chemistry to zoology.
  • 128. Marlena's Algebra Tutoring
    Free algebra help and affordable detailed solutions in 18 hours or less.
    http://algebratutoring.net/
    Online Algebra Tutoring get detailed answers in 18 hours or less AlgebraTutoring.net closed for business Any comments can be sent to marlena@algebratutoring.net

    129. LIMDEP 7.0 Help File
    Work Areas and the Project Window 3.7. Using help 3.8. Hausman Tests 9.13.Moment Based Specification Tests Chapter 10. Matrix algebra 10.2.
    http://www.limdep.com/On_Line_Help/limdep.htm
    LIMDEP 7.0 Help File
    Select a topic from the LIMDEP Version 7.0 Help File.
    For general LIMDEP program and ordering information, see our home page: www.limdep.com
    Topics
    Current Sample
    DATA
    Data Files
    Describing Data ...
    WEIGHTS
    Commands
    APPEND
    ARMAX
    BIVARIATE PROBIT
    BOXCOX REGRESSION ...
    WRITE
    Windows Summary
    Summary - The LIMDEP Desktop
    Manual
    Chapter 1. Introduction to LIMDEP
    1.2. Econometric Techniques
    1.3. Getting Started
    Chapter 2. Installing and Executing LIMDEP ...
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    New Features in LIMDEP
    Updates
    Calculating the Location of the Maximum or Minimum of a Variable
    Negative Binomial Probabilities in CALCULATE
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    Appropriate Asymptotic Covariance Matrix for OLS in the TSCS Model
    LIMDEP Programs
    2SLS For Klein's Model I
    Confidence Region for Two Coefficients
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    Data Sets
    Christensen and Greene 1970 Electricity Data
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    The NIST Benchmarks
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    130. BJ Pinchbeck's Home Work Helper Offers Links To Math Sites For Kids.
    Offers math homework help including calculus, algebra, geometry and trigonometry links recommended by BJ Pinchbeck and DiscoverySchool.com.
    http://school.discovery.com/homeworkhelp/bjpinchbeck/bjmath.html
    For our newsletter and special teacher promotions. Go to: Choose a subject... Art/Music English Foreign Languages Math News Recess Reference Science Search Engines Social Studies About B.J. Ask B.J. Alphabetical List New Sites Site Map General Math Algebra Calculus Elementary Level Math ... Math Tables, Definitions, and Other Cool Resources General Math
    Ask Dr. Math

    The MathPage

    Dan's Math@Home Page

    Basic College Mathematics
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    Back to Top

    Algebra
    Pre-Algebra

    Algebra Problems On-Line

    Abstract Algebra On-line

    Introduction to Algebra
    ... Back to Top Calculus Calculus@Internet Homepage Graphics for the Calculus Classroom Calculus Lecture Notes Karl's Calculus Tutor ... Back to Top Elementary Level Math A+ Math Rick's Math Web Electronic Flash Cards for Kids Math Dictionary for Kids ... Back to Top Geometry Geometry Formulas and Facts Geometry Center Search Page Basics in Geometry The Geometry Junkyard ... Back to Top Trigonometry Dave's Short Course in Trigonometry Back to Top Math Tables, Definitions and Other Cool Resources Dave's Math Tables Hotmath Math Index Favorite Mathematical Constants ... Back to Top Credits: PhotoDisc Site Map About Us Feedback Discovery.com

    131. Interactive Mathematics Activities
    More than 320 Java applets help illustrate topics in arithmetic, algebra, geometry, mathmagic, optical illusions, probability, calculus, combinatorics
    http://www.cut-the-knot.com/Curriculum/
    CTK Exchange Front Page
    Movie shortcuts

    Personal info
    ...
    Recommend this site

    Interactive Mathematics Activities
    Memory and Matching
  • Match answers
  • Memory - Easy
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  • Memory - Hard
    Arithmetic
  • 2 Pails Puzzle
  • 3 Jugs Puzzle
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  • Two Simple Equations
    Algebra
  • Binary Color Device
  • Breaking Chocolate Bars
  • Candy Game: Integer Iterations on a Circle
  • Chebyshev polynomials ...
  • Heads and Tails counting, invariance
  • Identities in the Multiplication Table
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  • Squares and Circles parity, invariance
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  • Sum of Consecutive Integers is Triangular
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  • Toads And Frogs Puzzle counting, logic, problem solving
  • What's next?
  • 132. Mathematics And Education Resources
    Includes recommendations for webpages and books for algebra, geometry, trigonometry, games and help forums. Also has a list of educational administrators and associations.
    http://www.math.schoolreference.com/
    Home Administrators Algebra Assessment ... Business Opp Secure online shopping-great prices! Mathematics and Education Resources Welcome to the Mathematics and Education Resources page, a directory of sites for students, parents, teachers and administrators. Take some time to browse through the different categories found on the menu to the left. If you are a teacher, you'll find some useful sites for teachers below. Our newsletter is sent out periodically , and contains more detailed reviews of some of our featured sites, along with classroom ideas and sample problems. Subscribe here - it's free! Please send an e-mail if you notice any broken links or if you want to suggest a site for inclusion in this directory.
    Directory of Sites for Teachers:
    Site Level Description About.com Secondary About.com secondary mathematics page, with links to lesson plans, assessment and other subject areas. AMS All Levels American Mathematical Society homepage, with membership information, journals, conferences, and indices to other topics. Currency Converter All Levels The Universal Currency Converter page. This is a working currency converter with up-to-date conversion rates. Good for most currencies in the world.

    133. PHSchool - Mathematics
    Math online Intervention System. A powerful Webbased companion to Prentice HallMathematics, Courses 1, 2, 3, Pre-algebra, and algebra 1 providing diagnostic
    http://www.phschool.com/math/
    We've redesigned PHSchool.com! To take full advantage of our improved Web site, please take a moment to upgrade your browser now. The latest versions of browsers such as Internet Explorer and can be downloaded for free from the Web. Thank you. Web Code: What is this? Click here to find the site for your textbook. Find your state's standards, lesson plans, and more. State AK AL AR AZ CA CO CT DC DE FL GA GU HI IA ID IL IN KS KY LA MA MD ME MI MN MO MS MT NC ND NE NH NJ NM NV NY OH OK OR PA RI SC SD TN TX UT VA VT WA WI WV WY Find your representative. State Int'l DoDEA AK AL AR AZ CA CO CT DC DE FL GA GU HI IA ID IL IN KS KY LA MA MD ME MI MN MO MS MT NC ND NE NH NJ NM NV NY OH OK OR PA RI SC SD TN TX UT VA VT WA WI WV WY
    Focus On Mathematics
    Your Math Textbook Web Site
    Check out all of the terrific resources online for your textbook
    Prentice Hall Mathematics
    Take an online tour of the new program that everyone's talking about.
    Math Online Intervention System
    A powerful Web-based companion to Prentice Hall Mathematics, Courses 1, 2, 3, Pre-Algebra, and Algebra 1 providing diagnostic tests, individualized instruction, and powerful reporting features to support NCLB.
    Looking for textbook information and pricing? Visit our

    134. Statistics And Statistical Graphics Resources
    a special offcampus page to help Internet visitors Introduction to Computer GraphicsOnline computer graphics Linear/Matrix algebra Linear algebra WebNotes A
    http://www.math.yorku.ca/SCS/StatResource.html
    Statistics and Statistical Graphics Resources
    Michael Friendly
    Statistical Consulting Service
    and Psychology Department
    York University

    Updated: 22 Jan 2003 15:11:02
    160 New items since: 28 Apr 98 10:01
    Status: Pruning/fixing broken links (103) This page provides an annotated, topic-based collection of available resources for statistics, statistical graphics, and computation related to research, data analysis and teaching, now containing over 580 links. Recently added links are now maintained automatically and indicated with the icon. There is both some redundancy (some sites listed more than once, or separate listings for different documents maintained at a single place), and some unevenness (it reflects my idiosyncratic interests) in this list, but I hope it's useful nonetheless.
    Web Feet
    Links Go

    Statistical Software Editor's Choice
    symbol of excellence Sci Central
    Meta Directory The page has grown to the point where it should be subdivided and reorganized. That process has begun, and the address for this page may need to change to reflect that reorganization. Is there something useful I've overlooked in this collection? Let me know through this

    135. °^° Site Of Extension °^° (c) 1998-2004 BF.
    on Hopf algebraic techniques and speed up the evaluation of Clifford products ifa symbolic bilinear form is used in computations. The online help pages of
    http://clifford.physik.uni-konstanz.de/~fauser/pg/CA.shtml
    Home
    Maple

    Maple online

    AXIOM
    ...
    Other CA packages

    Site of Extension : > Computer Algebra
    Maple
    Already in preparing my PhD thesis, I benefited from the use of computer algebra systems (CAS). While I wrote some DERIVE routines, I became soon aware of the CLIFFORD package for Maple developed since 1996 by Rafal Ablamowicz . This package has grown substantially since that time and with the advent of the BIGEBRA extension, I was invited to be a coauthor of the package. Of course, there are further packages as Cliplus, Octonion, GTP, and code_support which will be found on the home page of CLIFFORD and BIGEBRA. CLIFFORD comes with about 120 procedures, each of them documented with an online help page included in the Maple help browser. Hence these pages are searchable. Moreover, these help pages contain examples and test to show how the procedures work, what they can do, and how they are applied. The set of help pages serves also as a set of test pages to guarantee, as fare as possible, the functionality of the package. A pdf-file containing all help files is available, but check out the most recent versions from

    136. Learning Disabilities OnLine: LD In-Depth: How Can I Help Students With LD In Al
    This may help students to not confuse or overgeneralize algorithms. arithmetic understandingand the means to solve algebraic equations LD online Resource Guide.
    http://www.ldonline.org/ld_indepth/math_skills/algebra_and_ld.html
    How Can I Help Students with Learning Disabilities in Algebra?
    Brad Witzel, Stephen W. Smith, and Mary T. Brownell
    Intervention in School and Clinic
    Vol. 37, No.2, pp 101-104
    November 2001
    Reprinted with permission
    PROED Students with learning disabilities in algebra classes face many difficulties. Among them are an inability to apply algorithmic knowledge to novel problems, poor arithmetic skills, and difficulty with the abstract content associated with higher-level mathematics. With this in mind, we explore some of the research on the algebra performance of students with disabilities and reasons for their difficulties. In addition, we discuss pedagogical practices that best serve students with learning disabilities in algebra. Arithmetic to Algebra Gap The difficulty with symbolic reasoning can be heightened when teachers introduce algebra concepts that are more difficult than arithmetic instruction (see Figure 1). According to some researchers, educators need to attend to the following instructional techniques to help students make connections between arithmetic to algebra and understand algebraic notation. Specifically, educators should use three principles: 1. Teach through stories that connect math instruction to students' lives. For example

    137. Algebra Story And Word Problems
    21st Century Problem Solving introduces how to solve problems reliably in Grade school through grad school and beyond in all subjects that use mathematics for problem solving for problem solving .
    http://www2.hawaii.edu/suremath/intro_algebra.html
    Reliable problem solving in all subjects that use mathematics for problem solving. Algebra, Physics, Chemistry... from grade school to grad school and beyond. For Windows users, NuCalc 2.0 (The Graphing Calculator for Windows) includes capabilities similar to SureMath.
    Only identify what is asked for. Ignore all the ifs, ands and buts....
    A problem is understood by solving it not by pondering it.
    sign guestbook. See guestbook. This site is directed to students teachers administrators Parents and other professionals. document.write('');
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    Factor
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    Scientific notation
    A collection of simple Word Problems illustrating concept-based problem solving. These are typical of problems in textbooks, in a variety of competency tests and real-life problems. The problems, and their solutions, on this site provide a base for

    138. S.O.S. Mathematics - Algebra
    S.O.S. Mathematics algebra The algebra index of the extensive S.O.S.Math site has lessons and reference material on units of conversion, complex numbers, equations, and much more. Each section
    http://rdre1.inktomi.com/click?u=http://www.sosmath.com/algebra/algebra.html&

    139. Webmath
    Webmath WebMath is an online program that instantly solves a wide variety of mathematical problems. A fillin form lets users type in polynomials, quadratic equations, radical expressions, or
    http://rdre1.inktomi.com/click?u=http://school.discovery.com/homeworkhelp/webmat

    140. Algebra Helper - Welcome!
    Helps students with equations and inequalities, simplifying expression, graphing and complex numbers. Includes problem solving exercises.
    http://www.algebra-answer.com/
    Well you have landed in the right place!
    Relief is just around the corner...a couple of clicks away. Introducing The Algebra Helper - an exciting new algebra learning tool. The Algebra Helper is not your typical algebra homework software. It actually helps you solve algebra problems that you type in yourself! It helps you with YOUR homework! Now, we are not going to sit here and tell you that The Algebra Helper will solve any algebra problem in the world. We are not going to try to tell you that you don't have to actually learn algebra when using our software. We are not going to tell you that we will give you all of the answers to your algebra homework. What we ARE going to tell you is this: If you want to complete your algebra homework faster ... If you want to actually understand your algebra homework

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