- KenKen - Nextoy, LLC
KenKen is a sudoku variant invented by Japanese mathematics teacher Tetsuya Miyamoto. This site offers puzzles at various levels of difficulty to get you started, as well as rules, tips, news, related products, and KenKen programs for your mobile device.
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- KenKen @ the Math Forum - Nextoy, LLC and the Math Forum @ Drexel
A collection of KenKen puzzles ranging in size from 3x3 to 9x9, at four difficulty levels, with many combinations of arithmetic operations. The site offers an introduction to KenKen, lesson plans, rules, discussion, and tutorial. KenKen is a number puzzle
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- Ken's Puzzle Sites - Ken Duisenberg
Links to more than 50 interesting puzzle sites Ken has found.
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- Key Curriculum Press
Publisher of innovative texts and software applications for teaching mathematics including the Geometer's Sketchpad (dynamic geometry), Fathom (dynamic statistics), TinkerPlots (dynamic data exploration and analysis), Michael Serra's textbook Discovering
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- Keyed-In Magazine - nelsonthornes.com
Weekly puzzles, quizzes, features of great mathematicians, fun with numbers, and strategy games. An Internet quest and "the serious stuff" offer self-scoring problems. Teacher resources provide links and ideas for each chapter of the Nelson Thornes Key
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- Key Issues for the Mathematics Community - The Math Forum
Links to Web resources addressing key issues, compiled in the following categories: Key Questions; Key Problems and Opportunities; Equity and Access (Minorities and Mathematics; Women and Mathematics; Resources for People with Disabilities; Non-English
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- Key Problems and Opportunities - Key Issues in Mathematics at The Math Forum
Third International Mathematics and Science Study (TIMSS); National Science Foundation in Peril; The Necessity of Setting Research Priorities.
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- Key Questions - Key Issues in Mathematics at the Math Forum
Links to Web resources addressing questions such as: Why should the public support mathematics? Why is a research mathematics program necessary for graduate science programs? Why are we well-suited to teach mathematics to scientists and engineers? Why
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- Khan Academy - Salman Khan
Salman Khan has recorded over 1400 YouTube videos on a variety of topics, largely math and finance. The Khan Academy, which Khan founded, is a not-for-profit organization with the mission of providing a high quality education to anyone, anywhere. To keep
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- Kids and Computers - Don Sleeth
Information about MicroWorlds Logo (Windows 95) computer programming software for kids, from satisfied customer and dealer Don Sleeth. Explore how a Dad and his daughter learned this intriguing program. Welcome and Introduction, Overview, Nicole's Work,
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- KidsBank.Com - Sovereign Bank
A tutorial site in the form of an animated storybook that teaches about money, from the penny to the transfer of electronic funds. Children join characters on a tour of Money, Savings, Interest, Checking, and Electronic Banking, five chapters each hosted
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- Kids Corner - Hope Paul Productions
Games to play online, and a demo to download: Solid Geometry (make your own 3-dimensional shapes), and a store where you can order math toys and games.
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- Kids Do Count! Seeking Excellence in Math Education
"We feel strongly that new new math is detrimental to our children's future...." Background, experiences of students and parents, impact, comments on NCTM, and "what to do" statements about the teaching of the "Connected Mathematics" and "Investigations
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- Kids First - Coalition for Quality Children's Media (CQCM)
The Coalition for Quality Children's Media evaluates children's media, and is a resource center and clearinghouse for children's media that helps parents and kids find good adult-approved and kid-tested programming. A searchable video and CD-ROM database
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- Kids Math
Elementary and intermediate drill exercises/games (timed, with answers shown correct or incorrect) for learning addition, subtraction, multiplication, division, fractions, decimals, measurement, graphs. In English, Spanish, and Chinese. Also pre-algebra
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- Kidsmath - About.com
A guided portal to the world of kids' internet math sites. Includes links to math sites categorized by level and topic; math newsletters (which typically highlight a group of sites on one topic, with associated articles); discussion forums; monthly problems
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- KidsNook
A search engine for children. Search for words like math, multiplication algebra, etc. to find games, songs, and sites for learning math.
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- Kids' Place Brain Teasers - Houghton Mifflin Company
Math puzzles for grades 3-4, 5-6, and 7+. You don't need to be a math whiz to solve them, just to be patient and find different ways of looking at things. New puzzles and the answer to the previous week's puzzles are posted each Thursday. Helpful hints
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- KIDS Report Archive (Internet Scout Project) - Computer Sciences Department, University of Wisconsin-Madison
Kids Identifying and Discovering Sites - reports written by and for kids about cool and helpful Web sites, on various topics (such as Cool Connections, Stretching the Mind, Native Americans, Ancient Civilizations, Election '96, The Planets, etc.). Includes
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- Kids Web: Math Fun, Science Fun - Chicago Systemic Initiative (CSI)
A small collection of fun and educational links to sites for kids. Each link is described briefly.
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- KIDware Educational Software - Lou Tylee, KIDware
Educational math software for Windows. Elementary programs, programming tutorials, and real-world math tutorials for higher grade levels. Commercial site, with some free programs.
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- KidWind Project - KidWind Project
The KidWind Project is a team of teachers, engineers, and scientists committed to innovative energy education, focused on wind power. The project aims to make affordable project kits available, and provides free lessons and teaching ideas, which could
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- Kinds of Constructivism: An Annotated Bibliography - Annie & John Selden; The Math Forum
A bibliography prepared by Annie and John Selden as a supplement to "Constructivism in Mathematics Education - What Does It Mean?" - a talk they gave at the 1996 Joint Mathematics Meetings in Orlando, Florida.
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- Kinetic Books
A line of interactive textbooks that take advantage of computers by including simulations, animations, audio, video, multiple self-assessment tools for students, scoring, and much more. Digital Algebra I textbook offers online demo, trial version, or
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- King of Mnemonics - Anton Prasolov
Prasolov's Hermes tables, alongside poems such as "fact dense fogs warm suns defy," help you remember mnemonics for determining large cubic roots, weekdays from dates, and more. Demo or purchase his King of Mnemonics (KoM) Windows software. Inspired by
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- Kirigami - Kevin S. Whitley
Kirigami is the Japanese art of making figures out of paper by cutting. This applet lets you create similar figures on your computer by cutting a polygonal wedge from a virtual piece of folded paper. You can change the regular polygon, your wedge, and
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- Kitchen Conversions - Gourmet Sleuth.com
Calculators for and information about common cooking conversions. Includes a calculator with actual weights for over 6500 foodstuffs, as well as one with rough estimates for converting between grams (weight) and teaspoons and other common cooking measures
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- KitchenMath.com - MotionNET.com
Submit fraction or decimal amounts for conversion into pinches, dashes, teaspoons, tablespoons, fluid ounces, cups, pints, quarts, and liters. Scale quantities using the "multiply values by" field.
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- Kitchen Table Math - Catherine Johnson
A collaborative weblog that began when Johnson's son "... finished out the school year with a 39 on his Unit 6 test, Fractions and Decimals.... Later on I discovered that fractions are the 'bottleneck' in elementary mathematics; lives are lost in the
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- K'NEX Education Division - K'NEX Industries, Inc.
Manipulatives consisting of rod-and-connector construction toys. K'NEX Education offers Sets of packets (samples downloadable in PDF format) suggesting uses for math and science in the classroom through building models. Classroom K'NEXions provides lesson
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- The Knight's Tour - Dan Thomasson
The Knight's Tour web site shows various ways to solve open and closed knight tours. The site also offers several animated tours, artwork, and new concepts (magic squares, tessellations, and conjectures about prime numbers) derived from knight moves on
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- Knot a Braid of Links (CAMEL) - Canadian Mathematical Electronic Information Services
Mathematics on the Web: a collection of mathematical Links of the Week from 1996 on, with a new one every week. Maintained by CAMEL at Simon Fraser University.
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- Knot Magic Not Magic
(MatheMUSEments!) - Ivars Peterson (Math Muse for Kids)
Sometimes what looks like an impressive knot isn't a knot at all. Magicians and escape artists are experts at tying phony knots. Though magicians like knots that can fool people, mathematicians are mostly interested in real knots, especially knots that
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- Knots (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center
A mathematical knot is a knotted loop (a knot that can be unknotted is called an unknot). Two knots are considered equivalent if it is possible to rearrange one to the form of the other, without cutting the loop and without allowing it to pass through
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- Knots on the Web - Peter Suber, Earlham College
A comprehensive list of knot resources on the Web c2004, annotated and organized into three categories: knot tying, knot theory, and knot art. Also Knot books and a Knots Gallery displaying images from the newsgroup rec.crafts.knots.
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- Knotted Walks - Ivars Peterson (MathTrek)
Given that it normally takes some effort to create a knot, the spontaneous formation of knots in ropes and strings can appear rather puzzling. Having no obvious explanation of the effect, frustrated users can't help but acknowledge this knotting phenomenon
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- Knot Theory - ThinkQuest 1997
A short course on knot theory, including tutorials on the basics, knot invariants, knot properties, and knot arithmetic; biographical information on historical and contemporary figures working with knot theory; applications of knot theory; a discussion
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- Knowing, doing, and teaching multiplication (Learning and Mathematics) - Magdalene Lampert; Math Forum
In this 1986 article Magdalene Lampert, of the Institute for Research on Teaching at Michigan State University, advocates incorporating students' intuitive knowledge about mathematics into classroom lessons. Like Richard Lesh, she encourages putting new
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- Knowledge Adventure
A developer and publisher of interactive multimedia products for kids and educators. Products include the Blaster Series (Math, Spelling, Writing, Reading), Fisher-Price Ready for School, JumpStart activities for elementary grades, and Kaplan Higher Scores
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- Knowledge Online Services - Knowledge Online Services
Online tutoring services for all the subjects in grades K-12 and undergraduate college level. Free trial session.
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- The Knowledge Tree, Inc.
3-D modelling and mathematics software, for a wide range of educational levels. Dealers for Aspex Software, Greygum Software, and the Math Circus programs.
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- Know Your Roman Numerals - George W. Metz
"What a Roman Legionary needs to know in order to count in Ancient Rome": a chart of numbers, with their names in Latin and the corresponding Roman numerals.
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- Kognitia - Kognitia
Through games such as K Tycoons, Kognitia offers classrooms challenging competitions with other classrooms. Take a guided tour; register online.
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- Ko's Journey - Scott Laidlaw and Jennifer Harris, Imagine Education
A web-based middle school math game, animated in 3D, for school or home use. Track student progress through this NCTM Standards-tabled, story-based adventure. Try a demo; purchase licenses tailored for individuals, classrooms, schools, or homeschooling.
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- "Kryptos" - Central Intelligence Agency (CIA)
This page showcases the history and mystery of "Kryptos," a sculpture at the CIA by artist James Sanborn. See the Flash video introduction, and learn more about the sculpture, the code, and the artist. Text-only version available.
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- KryssTal: Mathematics - Kryss Katsiavriades and Talaat Qureshi
Essays with worked examples: numbers, algebra, Pascal's Triangle, trigonometry, logarithms, graphs, calculus (differentiation), and more.
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- KS3 Maths Homework Series - Stafford Burndred; Pearson Publishing (U.K.)
A series of 6 homework packs providing 180 different homework sheets covering levels 3-8 of the UK National Curriculum (ages 11-14). Each pack addresses a separate level, and exercises use a speed marking system so that a full class can be marked in about
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- KSEG - Ilya Baran
KSEG is a Linux program for dynamically exploring Euclidean geometry. Create a construction, such as a triangle with a circumcenter; drag its vertices, and its circumcenter moves accordingly in real time. Features include a fast core to support large
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- Kumon Math & Reading Centers
Individualized, self-paced, mastery learning programs for math and reading, offered at the center or by correspondence. The Kumon method emphasizes practical skills rather than theoretical concepts and focuses on self-learning. Students receive daily
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- Kung Fu Science - Institute of Physics
Watch martial artist Chris Crudelli demonstrate to physicist Michelle Cain how she can break a wooden plank with one strike of her bare hand. Before actually attempting the feat herself, Cain applies Newton's laws and the conservation of energy to calculate
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