MATH SITES
http://score.kings.k12.ca.us/lessons/

Topics addressed include Functions, Algebra, Geometry. Statistics and Probability, Discrete Mathematics, Measurement, Logic and Language

MONEY WORKSHEETS: 
http://www.learningpage.com/free_pages/menu_basics/money.html

You can download the entire unit on money or pick and choose the worksheets appropriate for your class level, from K through 3. Also check their worksheets for measurement and time.

FRACTION MANIPULATIVES:
http://abcteach.com/Math/fraction1.htm

Print and cut out these manipulatives for fractions up to one-eighth.

ELECTION MATH: 
http://abcteach.com/Elections/ELECTION%20MATH%20WORD%20PROBLEMS.pdf

While the Florida numbers remain fuzzy, here are some solid returns for student classroom practice in problem solving and elections. Grade three level.

A LIST OF IDEAS FOR MATH CENTERS: 
http://www.track0.com/canteach/elementary/mathcentres.html

For grades K through 2, numerous suggestions will inject your math centers with some new activities for measurement, patterns, numbers and equations, and geometry.

MATH CENTER IDEAS: 
http://www.geocities.com/teachingwithheart/mathcenter1.html

Use these creative center ideas to reinforce math concepts from simple addition to multiplication. 

MATH POEMS: 
http://members.home.net/henriksent/math.htm

Your elementary students will get their facts down quickly when you add a few rhymes, some repetition, and a bit of personification. There are many poems to choose from here to spice up your math exercises.

PIZZA FRACTIONS: 
http://math.rice.edu/~lanius/fractions/

Try this lesson plan to teach addition and multiplication of fractions, as well as equivalent fractions. Students can also complete the activities online and receive immediate scores.

THE MILLION DOLLAR LESSON: 
http://math.rice.edu/~lanius/pro/rich.html

Students might be surprised to find how their money grows in this lesson in exponential growth.

MATH IN ACTION ORIGAMI: 
http://home.earthlink.net/~pearl2/whalefld.html

This particular lesson plan focuses on creating a whale from squares, and will reinforce such terms as apex, 
isosceles triangle, scalene triangle, quadrilateral, congruent, and more--yes, all in an origami venture.

ADVENTURES IN STATISTICS: 
http://mathforum.com/trscavo/statistics.html

Formatted as a presentation rather than a strict lesson plan, the project can nevertheless be followed through for your own class project. It involves fifth grade students and the measurement of area of classrooms, with data analysis, medians, graphing, and sample worksheets and charts. Extension activity suggestions are quite good and could perhaps be implemented to create an entire unit in statistics.

INVASION OF THE POLYGONS: 
http://www.kqed.org/ednet/school/math/mathonline/lessons/polygons/

Treat your grade 4 or grade 5 class to a hands-on exploration of polygons, both on and off line. Two excellent lesson plans comprise this resource, with activities and assessments, as well as online resources, for each one. The lessons can be used with or without the PBS Eddie Files program.

CONSTRUCTING YOUR OWN SET OF TANGRAMS: 
http://mathforum.com/trscavo/tangrams/construct.html

Clear directions will take your students through the appropriate steps so each can construct his/her own 
set of tangrams. Follow the links under the Title for accompanying tangram activities, for grades 4-6.

MULTIPLICATION--AN ADVENTURE IN NUMBER SENSE: 
http://www.naturalmath.com/mult/

If you are having any sort of trouble teaching the multiplication tables to your students, please check this site for some very useful hints and helpers. You will find several activities, tables, and tricks to consider for those students who just might not yet "get it".

LET'S GRAPH: 
http://math.rice.edu/~lanius/Lessons/graph.html

Middle School students will use their own classmates to create a bar graph while problem-solving and considering ratios.

THE MATHEMATICS OF CARTOGRAPHY: 
http://math.rice.edu/~lanius/pres/map/

Mapmaker, mapmaker,make me a map... but not without using an awful lot of mathematical skill. Students will explore the world of cartology with various challenging problem-solving activities and online resources.

1000 LOCKERS: 
http://mathforum.com/alejandre/frisbie/student.locker.html

This problem presents a stimulating challenge for your high school students. To incorporate technology easily into this activity, have your students create spreadsheets for the problem. Be sure to check the links for twists on the 1000 Lockers problem.

RIVER CROSSING: 
http://www.emsl.pnl.gov:2080/docs/mathexpl/swimwalk.html

Divide your high school students into groups to tackle this algebra problem. Give them a time limit for a competition to see who first solves the problem.

HOTEL INFINITY: 
http://www.c3.lanl.gov/mega-math/workbk/infinity/infinity.html

Explore the paradoxes involved with the concept of infinity with the story of Hotel Infinity. Students will also look at turn-of-the-century mathematician Georg Cantor, father of Set Theory, and incorporate art into their math assignments with this study.

From MathGoodies (December,2000):

We have a new statistics worksheet to go with our latest Volume of lessons. 
http://www.mathgoodies.com/worksheets/statistics_wks.shtm

We have also created 2 new puzzles on Statistics along with their solutions: 
http://www.mathgoodies.com/puzzles/

We have created 3 shortcut pages for teachers, students and parents. 
Teachers:
http://www.mathgoodies.com/teachers.shtm

Students: 
http://www.mathgoodies.com/students.shtm
 
Parents: 
http://www.mathgoodies.com/parents.shtm


Elementary Math
--> MathCats <-- 
A fun math site for elementary kids. Be sure to try the Polygon Playground. 
http://www.mathcats.com/

MATH FACT CAFE - Paul Carver
http://www.mathfactcafe.com/

Begun by parents, this site allows you to generate your own custom math fact worksheets. Choose from a variety of problem types (addition, subtraction, multiplication, division, greater/less than, and mixed) and also set various options:
- font size
- division answers
- include name/date/score fields
- don't allow answers of -1, 0, or 1
- generate numbers with two decimals
- jumbo space for working solution
- no negative results for subtraction
- range for generating numbers
- row layout

After generating one fact sheet, the problems can be reorganized using the Re-Shuffle feature.
Help screens for each of the features and a general FAQ page are available.

STUDYWORKS! ONLINE - MathSoft, Inc.
http://www.studyworksonline.com/

StudyWorks! provides educational resources for math and science education, including:
- Explorations into activities
- Just for Fun, a recreation center with games and puzzles
- News and Links, covering the latest news in math and
science
- Learning Center, with downloadable modules and courses,
homework hints, and online tests

Some modules work with StudyWorks! Math and StudyWorks! Science software from MathSoft.

Parents' and Teachers' corners offer additional resources.

INVESTING FOR KIDS - Leung, Ngai, Mirza
http://library.thinkquest.org/3096/

This ThinkQuest 1998 site, designed by kids for kids, explores stocks, bonds, mutual funds, and other assets to teach the principles of saving and investing to beginners and seasoned investors. Included are
- ThinkQuest Stock Game: learn to invest with this game
for all ages, no experience required
- Stock Game for Educators: an Internet exploration with
a step-by-step demonstration on how to pick, buy,
monitor, and sell stocks, and how to calculate
financial goals
- Stock Learning Center: all kinds of information,
with kid-friendly investment ideas

STOCKSQUEST - Connie, David, Joseph
http://library.thinkquest.org/C001759/

For more, see StocksQuest, an educational, interactive site offering free global stock games, especially for
educators and contest organizers. Integrated into a realistic global stock market simulation are lesson plans, stock guides, and online investing resources.

2001 PUZZLE - Judy Ann Brown, Math Forum
http://mathforum.com/~judyann/2001/

For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2001 and the operations +, -, x, /, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for the counting numbers 1 through 100.
Students may use the Web form to submit solutions starting January 1, 2001; solutions will begin to be posted after February 1, 2001.

Pages available for printing:

Worksheet
http://mathforum.com/~judyann/2001/2001.worksheet.html

Rules of the Game
http://mathforum.com/~judyann/2001/2001.rules.html

Manipulative Worksheet
http://mathforum.com/~judyann/2001/2001.manipulative.html

MegaMaths Multiplication
http://www.bbc.co.uk/education/megamaths/

"This is a lively, interactive Web site for practicing and testing times tables. It's based on the popular BBC Schools Television series Megamaths, using the same castle setting and a selection of characters from the program to introduce a variety of activities and games. Children familiar with the series will recognize old friends but knowledge of the television series is not necessary." This Shockwave site is one the year's best
because of the variety of its multiplication activities. To practice with a particular number (such as eight), choose it from the jester's deck of cards.

Ready-to-use, online, interactive, multimedia math lessons
http://illuminations.nctm.org/imath/index.html

MAGIC SQUARES, MAGIC STARS & OTHER PATTERNS - Harvey Heinz
http://www.geocities.com/~harveyh/

Examples from the author's collection of numbers and the patterns that can be made from them.
- Introduction: A brief introduction to number patterns and these pages.
- Magic Squares: Samples of a large variety of magic squares of different orders, as well as prime magic
squares, anti-magic squares, and other unusual magic squares.
- Magic Stars: Includes a new definition for magic stars, examples of all orders from 5 to 12, a total of 20
different patterns, and interesting comparisons between the different orders.
- Bibliography: More than 140 books, chapters of books or papers dealing with magic squares, and much more.
- Glossary: Terms related to magic squares, cubes, tesseracts, stars, and other number patterns.
- Other Number Patterns: Number patterns, interesting numbers, magic graphs, and more.
- Similar web sites: Links to other Magic Square, Magic Star and recreational mathematics web sites.

NAVIGATION VECTORS - CIESE Online Classroom Project
http://www.k12science.org/curriculum/vectors/index.html

Intended to help students in grades 9 through 12 learn the principles of aviation navigation using real-time data. The project consists of six pilot training lessons and the Pilot Test Flight in which they solve an authentic real world problem using science and mathematics. In the lessons students learn how to use vectors, read real-time weather maps, and track planes actually flying in the United States skies.

The Teacher Area contains a teacher's guide for each lesson, including printable student worksheets, a list of curriculum standards that are satisfied by the project, and hands-on activities. The site lists numerous links related to aviation and physics as well as online experts who can be contacted with questions on these subjects.

The project is developed and managed by the Center for Improved Engineering and Science Education (CIESE) at Stevens Institute of Technology in Hoboken, New Jersey.
http://www.k12science.org/

ETHNOMATHEMATICS WEBHUNT: 
http://home.postnet.com/~mjg/ethalt.html

Wow... mathematics will be seen in quite a new light as students explore math in cultures across the ages, 
from African games, to Mayan calendars, to the first use of zero and negative numbers--fascinating material. 

MATHEMATICS 
Title: Breaking Away From the Math Book 
URL: http://emmy.nmsu.edu/breakingaway/
Grade Level: K-8 
Content: Math Activities, Teaching Notes, Math Education Institute.
Are you looking for creative math projects for your students? Here's a great assortment of activities designed to get your kids thinking mathematically: Cuisenaire Strips, Straw Polyhedra, Four Bugs, Kites, Counting to 100, Chinese Calendar Box, Ancient Knot, Addition Board, Six Pyramids, One Third, Pentagon Puzzles, and Sixteen Square Inches. Be sure not to miss the articles in the Author's Notes section: A Look 
at Mathematics Education, The Language of Algebra; and Equity and Quality in Mathematics Education.

THE TECHNOLOGY LAB - Activities for Students by Jon Basden
http://www.highland.madison.k12.il.us/jbasden/activities.htm

Jon Basden, a technology and mathematics teacher at Highland Middle School in Highland, Illinois, offers a variety of mathematics lessons as part of his Educational Technology Resource Web Site, including:
- Car Fever Supplementary Activity
- Soma Cube Unit
- Problem of the Week Links
- Operation "Big Mac"
- Web Journey
- Toothpick Puzzles
- Math Problems

S.O.S. Mathematics
http://www.sosmath.com/

An easily accessed list of common mathematics tables and formulas. Multiplication, primes, integrals, trigonometric, conversions, andderivatives are only some of the available tables. There is a section of
online examinations to test your mathematical knowledge. A Cyberboard for questions is included, as well as links to books and additional math sites.

From Teacher Stuff (2/7/01):

Numbers in Search of a Problem
http://www.kings.k12.ca.us/math/junkdrawer.html

A rich collection of data sources which can be used in any number of different types of classes.

T.H.E. Institute Presents a Multimedia Approach to Improving Math Instruction
http://www.thejournal.com/institute


PBS TeacherSource: From the Field -- Teaching Calculus Through a
Workshop Approach
PBSOL> Profdev>
http://pbs.org/teachersource/whats_new/math/thismonth_math.shtm

Elementary/Middle/High School
Explore a new approach to teaching calculus -- as a workshop. This technique has been implemented with great success at several universities and has implications for the K-12 classroom as well.

NOVA: Activity -- The Pythagorean Puzzle
PBSOL> Profdev>
Elementary/Middle School
http://pbs.org/nova/proof/puzzle/index.html

The Pythagorean Theorem is the foundation of geometry. Ensure that your students understand this critical idea with this visual application of the concept.

SUBJECT AREA: MATH 
Title: Welcome to Mathematrix 
URL: http://www.geocities.com/CapeCanaveral/Hangar/7773/
Grade Level: 3-12+ 
Content: An Eclectic Assortment of Math Recreations with Accompanying Explanations and Links to Other Web Resources. For many students math is a subject with all work and no play and they get buried in the tedium of computation. But math involves many different areas including the field of mathematical recreations. This is a great way to get your students thinking along a lighter vein towards creatively using their mathematical knowledge. Some of these endeavors evokes Aha! or Got it! from the students. 
That keys you into the nature of the real learning that is taking place. So take advantage of all the mathematical resources at the Mathematrix website.

PI DAY SONGS: 
http://www.winternet.com/~mchristi/piday.html

Mathematical singing... to celebrate Pi Day--warning: your students might get a little silly with these 
particular ditties :)

PI NECKLACE: 
http://forum.swarthmore.edu/teachers/middle/activities/pi_day.html

A great idea here to reinforce the concept of Pi.

PI POEMS: 
http://www.wpdpi.com/poem.html

Have your students team up to memorize and recite these Pi poems.

PI JOKES: 
http://www.wpdpi.com/jokes.html

For the comics in your classroom...

PI WORDSEARCH: 
http://www.wpdpi.com/wordsearch.html

Print these out for a class activity, and find the hidden message.

PI TRIVIA GAME: 
http://eveander.com/~eveander/trivia/

For some online Pi fun; have your students take turns and compare scores.

HIGHLINE ADVANCED MATH PROGRAM - Highline Council PTSA
http://www.blarg.net/~math/index.html

The Advanced Math Program is a math enrichment program for students in grades 5, 6 and 7. This program was developed by parent volunteers, working with educators, in the Highline School District #401, Seattle, WA. It began with 12 students in 1990 and has grown to include more than 300 students in 15 public and private schools around Puget Sound. Each school has one or more volunteer coaches (parent or educator) using the materials provided at this site. The schedule is specific to the Highline School District, but serves as a template to deliver these same concepts to any student in any school, including home-school.

Sections include
- Lessons: outlines of first and second year curricula, with a homework suggestions page
- Practice quizzes: a variety of review problems, some with sample student responses and rubrics to guide
scoring
- Links: other math sites
- About the program: history, objectives, approach, class format and an explanation of the Math Olympiad
- Administration: information for those participating locally
- Gifts and Books: gift ideas and a bookstore

Additional pages include

Fraction and Decimal Math Pak
http://www.blarg.net/~math/FDMENU.HTM

Math Quizzer
http://www.blarg.net/~math/subject1.html

Math Definitions
http://www.blarg.net/~math/deflist.html

Units Conversion
http://www.blarg.net/~math/units.html

EDUCATIONAL SOFTWARE COMPONENTS OF TOMORROW PROBLEMS OF THE WEEK
http://mathforum.com/escotpow/

ESCOT (Educational Software Components of Tomorrow) is an NSF-funded research grant to develop interactive Java applets to help middle school learners understand typically difficult math concepts, for example, fractions or probability. These applets can also be used for exploration outside of the Problem of the Week environment.

ESCOT TEACHER SUPPORT PAGES
http://mathforum.com/escot/teacher.html

Each ESCOT Problem of the Week has an accompanying Teacher Support page that provides:

- NCTM Standards links
- Possible pre-activities
- Possible post-activities
- Lessons online
- Relevant Ask Dr. Math archives
- Vocabulary definitions
- Other resources on the Web


SUBJECT AREA: SCIENCE, MATH, TECHNOLOGY 
Title: NASA Connect 
URL: http://connect.larc.nasa.gov/index.html
Grade Level: 4-8 
Content: Math, Science and Technology Videos, Teacher's Guides, Online Activities, Classroom Experiments. Do your students ever feel that all their science and math classes have no practical value? Here's a great resource to change their minds: NASA Connect. Here they can find out how all that math and science is used everyday by NASA scientists. The video segments are available for satellite downlink, can be viewed in many areas on PBS Television stations or are viewable on the web. An airtime schedule is available online along with teacher's guides including classroom activities and experiments.

SUBJECT AREA: MATH, ART 
Title: Totally Tessellated 
URL: http://library.thinkquest.org/16661/
Grade Level: 4-12+ 
Content: History of Tessellations, Numerous Examples, Tessellation Gallery, Background Information, Advanced Topics in Math and Art.
Everyday there are tessellated designs all around us but we just don't recognize them as specific mathematical patterns. The Totally Tessellated website will open your eyes up to all of these designs and to the history of tessellations. Be sure to visit the historical image gallery to see the numerous examples posted there. The Essentials and Mosaic/Tilings sections will show you how these interlocking designs work. It's amazing how simple design elements can produce such beautiful patterns.

THE SIERPINSKI TRIANGLE: 
http://math.rice.edu/~lanius/fractals/
Students will learn how to recreate this famous fractal.

INTRODUCTION TO FRACTALS--GEOMETRIC FRACTALS: 
http://www.shodor.org/interactivate/lessons/frac2.html
Follow the activity links with this lesson plan to create interactive fractals.

THE FRACTORY--AN INTERACTIVE TOOL FOR CREATING AND EXPLORING FRACTALS: 
http://library.thinkquest.org/3288/
This Think Quest project includes how-to's, a fractal gallery, a Make-Your-Own Fractal page, how fractals are used, and a link to the Fractini fractal generating program.

TOPICS IN MATHEMATICS--ART AND MUSIC: 
http://archives.math.utk.edu/topics/artMusic.html
Use this page for exploration and special projects once the students have the basics down and feel like getting creative.

Linear Algebra Toolkit ***
http://www.math.odu.edu/~bogacki/lat/

This site is designed by staff at Old Dominion University to help a student understand basic linear algebra procedures. Learn to solve linear systems of equations or transform a matrix to row echelon form.
Grade Level: High School, College
Content Area: Mathematics (Algebra)
Application Type: Tool, Resource


Follow the Trail O'Math
http://www.nationalmathtrail.org

The National Math Trail is now in its second year, is an opportunity for K-12 teachers and students to discover and share the math that exists in their own environments. Students explore their communities and create one or more math problems that relate to what they find. Teachers submit the problems to the National Math Trail site, along with photos, drawings, sound recordings, videos--whatever can be adapted to the Internet. These postings are then indexed according to grade level and math topic and remain on the site for access by educators, students and parents.

You might want to start by looking at this narrative
http://www.nationalmathtrail.org/ktabout.html


http://www.dositey.com

Dositey.com serves the K-12 educational community through supplemental education in the form of interactive modules, printable worksheets, interactive open-ended assignments, contests and games. The site features step-by-step lessons and exercises that teach children addition and subtraction with regrouping, multiplication and division. Additional programs in geometry and algebra will be offered soon.


EDUCATIONAL JAVA PROGRAMS - Jacobo Bulaevsky
http://www.arcytech.org/java/

This site began as a collection of Java applets to be used as tools to help and enhance the education of children at school and at home. Recently, Jacobo has expanded his site to include teacher lesson plans.

Pattern Blocks: Exploring Fractions with Shapes
Base 10 Blocks
Counting the Rice
Integer Bars (or Cuisenaire Rods)
The Pythagorean Theorem
Discovering the Value of Pi
Fractals: Exploring its simplicity, beauty and mathematics
Biology: Population growth and balance
MathXpert Online 

Recognix recently made available on its Web site http://www.MathXpert.com
a free service to help high school and college students master the intricacies of mathematics. 
MathXpert is a learning tool which shows students how to solve an algebra, trigonometry, or calculus mathematics problem. Students may practice with MathXpert problems, which are included with the program, or they may enter their own problems. The program was developed by Professor Michael Beeson of San Jose State University (a graduate of Cal Tech and Stanford Universities) after fifteen years of research. From a set of approximately 800 operations, the logic engine of the MathXpert programs is able to select the sequence of mathematical operations that need to be applied to arrive at a solution. MathXpert is available as a free online service to students, as a single user application program to be installed on the user's computer, and as a network application to be installed on a school network. 

Logic Puzzle Page 
http://www.halcyon.com/clifford/puzzle/INDEX.HTM
Grade Level: 6-12 
Subject Area: Math 
Content: Logic Puzzles, Interactive or Print-Out, Logic Worksheet for each Puzzle, Solution Explanations and Summaries Do your students need more practice with logic problems? If so here is the site for you. There is a long list of logic problems posted here as part of a puzzle of the month project. Puzzle subjects range from holidays to literature to history. Most of the puzzles are one step problems but there are a few that have up to 5 different parts. So come online and put your brain to work solving all these problems. Be sure not to peek at the answers until you are finished or thoroughly stumped.

HANDYGRAPH - Del Rey, Inc.
http://www.handygraph.com

HandyGraph allows users to create custom graphs within Microsoft Word documents. Open a HandyGraph window within the word processing application, and specify the size and numerical range of each blank graph before inserting it into the document. Linear graphs, logarithmic graphs, and number lines can be produced with custom colors, axis labels, and more. Once created, graphs may be cut, pasted, resized,
and moved in Microsoft Word or edited by HandyGraph.
The HandyGraph Tutorial provides step-by-step use of this utility and its features:

http://www.handygraph.com/TutorialStart.htm

Download a free evaluation version of HandyGraph for Windows or Macintosh, or register for a fully functional licensed version:

http://www.handygraph.com/Download.htm
http://www.handygraph.com/Register.htm

From PBS Teacher Reviews (3/26-4/1/01):

PBS Mathline: Lesson -- To Half or Half Not
PBSOL> Profdev>
http://pbs.org/teachersource/mathline/lessonplans/search_k-2.shtm
Elementary School
An alien from the planet "Fractional" is coming to your class to take half of your students' candy. Fortunately, the alien does not have a firm grasp on the concept of fractions and it's up to your students to
outwit the alien with this fun activity.

Livelyhood "Carpool to Nirvana" -- Math Activities
PBSOL>
http://pbs.org/livelyhood/carpool/resources/math.html
Middle/High School
Get your students thinking about their future careers by mathematically analyzing information related to commuting and salaries of the highest-and lowest-paid workers.

The College Board
http://www2.collegeboard.com/satprep/index.jsp
As one of the national leaders in standardized test design, the College Board offers this site with lots of free information and practice materials for students eager to prepare. There's a free diagnostic "mini-SAT" that analyzes your strengths and weaknesses as a test-taker, questions from past tests with answers to help you check your progress, and a question of the day and word of the day that allows you the chance to return and find new practice items daily.

Do Your Math -
http://www.doyourmath.com/all_tests.asp
So much attention is given to the vocabulary component of the SAT, I wanted to include a practice site for mathematics as well. Do Your Math offers practice tests for PSAT and SAT math items, and they're quick loading and browser-friendly. Each test has several dozen questions and your score is tallied on the 800 point SAT scale upon your completion. 
Do these problems give you trouble? Then go to GoMath http://www.gomath.com/ where they 
offer interactive, animated demonstrations of all kinds of Math principles and concepts!

Embark -
http://www.embark.com/locker/testprep.asp
Embark asks you to register using your e-mail address and zip code, but once you're in you have access to 3 complete SAT practice tests. You will receive an immediate score for your efforts and recommendations for how to sharpen your performance before you actually go in to take the real deal. There's also an SAT Tutorial available on the same page and links to ACT practice tests too!

4Tests.com - 
http://www.4tests.com/exams/examdetail.asp?eid=6
This site lives up to what other sites promise: an actual abbreviated practice test that allows students to check their proficiency in the Math and Verbal categories. There's over 100 questions here, and once you're 
done taking the test you can have it graded as a whole and then analyzed item by item if you wish. This site is nicely formatted and not too much of a strain on older browsers. There are similar tests offered here for the GED, ACT and TOEFL.

Free SAT - 
http://www.free-sat.org/
While not visually pleasing, this site does offer a nice collection of drills and games to help sharpen your skills. On the Math side there are practice pages students can complete right online, and on the Language side there's a more extensive collection of vocabulary-building exercises. These activities zero in on very specific collections of words used on the SAT. There's a dead link here or there, but overall it's useful and it's free!

Freevocabulary - 
http://www.freevocabulary.com/
Here's a site that offers 5000 definitions to words commonly found on standardized tests like the SAT. it's a grocery list folks, best saved to your hard drive so you can use your browser's Find function to quickly sort 
through words later. There's also a link to Texas Instruments where they have created Study Cards that run on the TI-73 and TI-83 Plus covering vocabulary, literature, math science, social studies, the arts and much, much more!

Number2.com - 
http://number2.com/
Here's a completely free site dedicated to helping students prepare for such tests as the SAT and GRE with such features as word and problem of the day, a vocabulary builder, and a free tutorial that allows students to receive feedback on their work - even sending e-mail reminders of what to study! There's also a coach's page for parents and teachers trying to support their students in preparing for the test.

PowerPrep - 
http://powerprep.com/satstrat.htm
Powerprep offers four free downloadable SAT practice programs in return for a free registration: the Diagnostic Test, Digital Reader, Online Strategies and VocabMaster Lite. Each file is 1 meg or less for quick downloading. There's also free classes and tutorials. Be careful to examine each practice opportunity carefully, though, as the company also markets full versions of their software.

Question of the Week -
http://www.review.com/qow.cfm?testType=SAT
The Princeton Review presents this opportunity to examine an SAT question each week, and to take a practice test online as well. The site is powered by Horizon, so your browser has to have the capabilities to handle the technologies they use. Not sure if you're up to par? No problem, with a click they'll test your browser and let you know if you have the capability to make use of their programs.

Secrets of the SAT -
http://www.pbs.org/wgbh/pages/frontline/shows/sats/
PBS' Frontline series tackles the Standardized Achievement Test with a look at its history, a discussion of its use to screen college applicants, and an exercise in rating and following five applicants through the admissions process to see who actually is accepted. There's video and audio clips and controversial topics like the "booming test prep business" and "race sensitive admissions".

Test Magic - 
http://www.testmagic.com/FreeStuff/newsletter.htm
Simply enter your e-mail address for any or all of six Test Magic e-mail services and receive free practice questions and practice exercises right in your e-mail! The companies anti-spam pledge means that your address willnot be sold or given to other companies. Tests covered include the GMAT, GRE, SAT and TOEFL