 Owners of home computers join researchers in cracking problems and crunching data  Ivars Peterson  Science News Online
Owners of home computers have joined researchers in cracking problems and crunching data, searching for signs of intelligent extraterrestrial life, running large models of the world's climate, and carrying on a worldwide effort to identify recordbreaking
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 The Oxford Math Center  Emory University
Searchable notes, practice and review exercises with solutions, proofs, technology tips for TI graphing calculators, connections, examples worked at a virtual chalkboard with narration, and more resources for learning precalculus, calculus, statistics,
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 Oxford University Press
The world's largest university press, publishing 3,000 new books a year, including scholarly works in all academic disciplines, bibles, music, school and college textbooks, children's books, materials for teaching English as a second language, business
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 OzGrid Business Applications  Dave Hawley
Focus on Microsoft Excel and Spreadsheet applications, with over 4000 pages (and growing) of information. Newsletter, most popular productgs, templates, books, question and answer forum.
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 Packing Pentominoes  Mark Michell
For rectangles with a given ratio of height to width, what is the smallest rectangle that will allow the construction of a complete set of pentominoes?
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 Packing Videotapes  NASA Lewis Learning Technologies Project
Roger had to pack videotapes 10 to a box. If he had 178 tapes of one kind and 121 of another kind, how many boxes would he need in order to pack them all and not mix the different types? A detailed answer is provided. From NASA's 9th Grade Math Proficiency
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 Packomania  E. Specht
The best known packings of equal circles in the unit square and the unit circle. Tables summarize the current status of the search. Figures may be downloaded in postscript format. Also available from http://hydra.nat.unimagdeburg.de/packing/packing.html.
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 Page of Conversion (Convert It)  Ramsviks, Adler
Enter a number and press the tab key to convert among bases, tempreatures, and measures and weight.
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 Pages Mathématiques  Lycée de Vienne SaintRomainEnGal (académie Grenoble)
Une série de cours de mathématiques: Géométrie du triangle; Transformations; Géométrie des cercles; Barycentres; Coniques et courbes; Solides; Statistiques; Fractales; Géométrie non euclidienne;
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 PageSurf
A payperclick search engine with 7,000,000+ math entries.
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 Pagina de Pedro Hugo Garcia Pelaez  Pedro Hugo Garcia Pelaez
Pagina con diversas calculadoras fisicas y matematicas. Apuntes y links relacionados. Calculadoras: Programa de resolución de multiplicación de matrices hasta orden 6; Forma de Jordan; Calculadora de diagonalización; Calculadora de proyecciones; Calculadora
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 Paginedimatematica  Bruno Tomaino
In Italian: Analisi, trigonometria, equazioni differenziali, test a risposta multipla.
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 The Pai Intersect  Jimmy Pai
Blog by an Ottawa (Canada) secondary mathematics teacher and graduate student in education. Posts, which date back to August, 2012, have included "Understanding Fraction Division #2  Part 1," "$100 Tablet Project," "Spiraling through the curriculum,"
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 Palestinian Central Bureau of Statistics (PCBS)  The Palestinian National Authority
The agency that collects official statistics for Palestine. Tables of key social, economic and demographic statistics are online; some are available for download, or are linked to methodological information. Site also includes census information, list
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 Palindromic Numbers and Other Recreational Topics  Patrick De Geest
Many odd facts about big (and little) numbers, including circular primes and palindromic triangulars, tetrahedrals, squares, cubes, and primes. Also assorted odd puzzles, etc.
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 Palindromic Primes  Ivars Peterson (MathTrek)
Palindromic primes are whole numbers, evenly divisible only by themselves and 1, that also have the same sequence of digits read forward or backward... The current record for the largest known palindromic prime is held by Harvey Dubner, a retired electrical
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 Palmer's Ponderings  Christina Palmer
Blog by a high school math teacher in Massachusetts. Posts, which date back to June, 2013, have included "I wonder...... (Cheerios in a chimney box)," "Four = Eight (almost)," "Today I Shut Up," "State Test Questions That Make Me Angry," "TMC14," "Compounding
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 Panitz cooperative learning and WAC web page and much more  Ted Panitz, Cape Cod Community College
Workshops, articles, and other resources on cooperative learning and pedagogy.
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 Pantagraph (Manipula Math)  International Education Software (IES)
A pantograph is a drawing instrument for magnifying figures. Using the applet on this page, by moving the red point to trace an original figure you can automatically obtain a magnified figure with the pen at the blue point.
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 Panthera's Puzzle Contest  Dr. Amy Galitzer; Puzzle University
A weekly contest of math, logic, and word puzzles sponsored by the American Mathematical Society and the University of Maryland Mathematics Department. You can submit your own puzzle for the next contest by signing up to participate, or simply read the
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 Paper Cup Mathematics  Jerry Neidenbach, Sue Harvey, and Marilyn McArthur; Park City Mathematics Institute
In this classroom activity, a PCMI Resource for Teachers, students investigate whether paper cups roll out the pattern of an annulus and how you can tell, how the dimensions of the cup relate to the dimensions of the annulus, and whether you can predict
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 paperfolding.com  Eric Andersen
Learn to fold origami from diagrams; read about the history of paperfolding, including the origin of the term "origami." The origami & math essay contains sections such as Origami, Geometry, and the Kawasaki Theorem; and Origami and Topology.
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 PaperFoldingFractals  Joel Castellanos, Rice University
A classroom teaching or personal learning software tool for Windows that can be an introductory lesson to fractals. Simple, stepbystep processes of paper folding can give rise to infinite verities of fractals. The user learns what fractals are and how
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 Paper Folding to Make Cubes (SMILE)  Koshy Kanicherilnalil, Chicago Public Schools
A lesson designed to develop students' ability to visualize threedimensional objects from twodimensional patterns by examining patterns of figures composed of six squares; predicting which of the twenty presented could be folded to make a cube; and
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 Paperforms: Polyhedrons for the Masses  John T. Vonachen
Geometric paper sculptures offered for sale.
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 Paperkit
Generate the exact type grid paper using this printable graph paper template. Specify format, units, spacing, margin, and stroke width and color.
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 Paper Models of Polyhedra  Gijs Korthals Altes
Dozens of paper models of polyhedra: Platonic and Archimedean solids, compounds, caleidocyli, and more. Print the images, cut, and glue them together, or download the models in zipped CorelDraw or GIF format.
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 Paper Mosaics  Alex Bateman
Origami tessellations consist of a simple crease pattern unit that gets repeated across a sheet of paper. Download Tess, a computer program that aids in the design of such tilings; and browse a gallery of works created with the application.
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 Paper Pool (SMILE)  Barbara Williams, Cook Elementary School
A lesson designed to teach students to recognize rectangles whose sides have the same ratio; use the concept of common factor to find rectangles with the smallest
area having a given ratio of sides; practice organizing data and looking for patterns;
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 Papers by Dr. Bert K. Waits  Dr. Bert K. Waits
In PDF format, essays include "The Role of HandHeld Computer Symbolic Algebra in Mathematics Education in the TwentyFirst Century: A Call for Action!"; "The Role of Graphing Calculators in Mathematics Reform"; "The Evolution of Instructional Use of
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 Papers on the History of Mathematics  Gregory Cherlin, Rutgers University
A random selection of term papers submitted in undergraduate, onesemester courses on the history of mathematics. Topics include zero, Fermat, Euler, Newton, Euclid's proof of the Pythagorean Theorem, Fibonacci, Vieta, conic sections, mathematics at Princeton
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 Parabolic Path to a Best BestFit Line  Jeff Reinhardt and Joe Simons
To find the best bestfit line for a set of data, students will determine the line that minimizes the sum of the squared deviations from the observed data to that line. This activity uses dynamic statistical software (Fathom™ 2) to engage students in
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 Parcelles d'infiniPromenade au jardin d'Escher  Alain Nicolas
Book in French, largely composed of pictures, on methods of figurative tiling. Site includes links to related sites in French and English.
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 Parent Roadmaps to the Common Core Standards  Mathematics  The Council of the Great City Schools
Guides for parents of children learning the mathematics of the Common Core State Standards (CCSS), and how to support that learning. Running six to eight pages in length, each freely downloadable roadmap includes examples; sections such as "Partnering
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 Parent Toolkit  NBC Education Nation
Academic "growth charts," tips, benchmarks, advice, and other guidance for parents, organized by grade. Parent Toolkit also provides tabletfriendly parentteacher conference guides, checklists, and templates for taking notes.
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 Park School Math  Park School of Baltimore
The math teachers at The Park School (Baltimore, MD) agree that "learning how to think is at least as important a part of a good mathematics education as is the core content.... However, we are all in constant friendly mutual disagreement about how best
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 The Partnership for 21st Century Skills
The Partnership for 21st Century Skills is a national organization that advocates for the integration of skills such as critical thinking, problem solving and communication into the teaching of core academic subjects such as mathematics, reading, science
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 Party Games  Ivars Peterson (MathTrek)
You're one of six people at a dinner party. You would undoubtedly find that the dinner party includes either a group of at least three people who all know one another or a group of at least three people who don't know one another. The reason for this
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 PASCALC.com  Pascal C.
A Webbased calculator with output printed linebyline on the screen. You can pass series of calculations on to your peers by sending a link. Note: the link is not encrypted, and you might consider something like tinyurl.com to shorten the link.
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 Pascal's Fractals  Ivars Peterson (MathLand)
It's possible to convert Pascal's triangle into eyecatching geometric forms. For example, one can replace the odd coefficients with 1 and even coefficients with 0. Continuing the pattern for many rows reveals an everenlarging host of triangles, of varying
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 Pascal's Triangle and its Patterns
All kinds of information about Pascal's triangle: sums of the rows; prime numbers; hockey stick pattern; magic 11's; Fibonacci sequence; triangular numbers; square numbers; polygonal numbers; points on a circle; connection to Sierpinski's triangle.
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 Pascal's Triangle from Top to Bottom  Matthew Hubbard and Tom Roby
A comprehensive resource for the study of Pascal's Triangle. The section "Applications" addresses questions such as "What types of questions are answered by the binomial coefficients?" and "What number greater than 1 shows up most often in Pascal's Triangle?"
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 Pascal's Triangle Interface  Andrew Granville
A form that lets you visualize the entries of Pascal's triangle with respect to a modulus between 2 and 16. Select values for the number of rows, modulus, and the size of the image, and submit.
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 Pascal's Triangle  Ken Williams
Pascal's triangle, written out through row 19, by Ken Williams of the Math Forum.
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 Pascal's Triangle  Math Forum, Ask Dr. Math FAQ
What is Pascal's Triangle? How do you construct it? What is it good for?
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 Pascal's Triangle  Math Forum/USI
A Web unit designed to support workshops given by the Math Forum for the Urban Systemic Initiative (Philadelphia and San Diego). Read about the history of Pascal's triangle and learn to construct it; view illustrations of number patterns to be discovered;
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 Pascal's Triangle: Number Patterns  Math Forum
Some history and an interactive exploration of number patterns and an exploratory Internet Web unit for elementary, middle school, and high school, with lessons, number pattern studies, and links to relevant sites on the Web.
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 Pascal's Triangle using Clock Arithmetic  Jay's Corner
Exploring Pascal's triangle when the modulus is a prime; when the modulus is a power of a prime; and when the modulus has at least two different prime divisors. From mod 2 to mod 12, illustrated. (See also Part II.)
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 Pascal Triangle Applet  Sergey Butkevich
An applet that graphically presents Pascal's triangle modulo an integer number p; i.e. it computes the binomial coefficients. It can draw triangles with up to 650 rows with a p value between 2 and 30,000 (though it's not very clear above 15,000). The
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 Passalgebra.com
Pass algebra with this online study guide. Practice with hundreds of problems, with answers worked out step by step. Examples of study guide and exercises provided. $27 for 1 year; stepbystep instruction for $2.50/problem.
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