 Number Patterns  Harvey Heinz
A brief description of why mathematics is often called the science of pattern followed by examples of a variety of magic squares of various types; examples of orders 5 to 12d magic stars, and selections from Heinz's collection of over 400 number patterns
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 Number Patterns in Pascal's Triangle (SMILE)  Ulysses Harrison, Dunbar Vocational High School
A lesson for grades 5 and up designed to enable students to recognize the integers, rows, and columns that comprise Pascal's Triangle. The main objective of the lesson is to enable students to reproduce the first eleven rows of Pascal's Triangle by recalling
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 Numbers  Kirsten Silverman
Blog by a Massachusetts middle school math teacher who "loves number theory and thinks sixth grade is the perfect place to share this." Posts, which date back to August, 2012, have included "Flipping"; "Cogs"; "LCM, GCF, and Fractions"; "Ordering Fractions";
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 Numbers Made Meaningful™  Naomi Halpern, TSI Productions
A collection of number literacy stories and games that gives preK children meaningful, tangible contexts to help them make sense of the abstract world of number symbols. Zero & Friends teaches children the names, personalities, values and relationships
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 Number Time  BBC Learning
Learn about numbers and the number system by playing Shockwave games, printing out activities to do away from the computer, watching "Addem" star in fun cartoons that reinforce ideas of quantity; and listening to math songs, accompanied by animation.
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 Number Up (SMILE)  Ernestine Bickham, Maria Saucedo Magnet School
A lesson for grades 78 that uses a deck of cards to help students practice addition, subtraction, multiplication, and division of whole numbers, and order of operations. From the Recreational and Creative Math section of a collection of almost 200 single
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 Numeracy Hour Activities  Ambleside Primary School on the Web
Games designed by or with children, and interactive teaching programs to download. Games and activities include Amblegraph (create simple bar charts online); Online Calculator; Analogue Clock (a time teaching tool); Table Trees (multiplication tables);
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 Numeracy in the News  The Mercury/University of Tasmania
Newspaper articles collected from the Tasmanian (Australia) metropolitan daily newspaper, The Mercury, to represent the five areas of the Chance and Data curriculum (Data Collection and Sampling, Data Representation, Chance and Basic Probability, Data
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 Numerical Analysis & Numerical Methods Project  John Mathews
Extensive modules & tutorials: solution of linear and nonlinear equations, interpolation and polynomial approximation, curve fitting, numerical differentiation and integration, numerical optimization, solution of ordinary and partial differential equations,
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 Numerical Integration: Accumulating Rates of Change  Geometry Center
The fundamental theorem of calculus tells us that if we know the rate of change of some quantity, then adding up (or integrating) the rate of change over some interval will give the total change in that quantity over the same interval. But often scientists
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 Odometers and the Place Value Chart (SMILE)  Donna BronsonCochran, George B. Swift School
A lesson designed to teach students to add decimals with the use of the odometer; place given numbers on the place value chart; and add numbers to the millionths on the calculator. From the Arithmetic section of a collection of almost 200 single concept
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 OER Commons  Institute for the Study of Knowledge Management in Education
An open learning network for teachers and professors to access their colleagues' course materials, share their own, and collaborate. The Open Educational Resources site features tags, ratings, comments, reviews, and social networking functions, as well
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 Office for National Statistics  Government Statistical Service, United Kingdom
The United Kingdom agency that coordinates national statistics. Tables of key social, economic, and environmental data, press releases, catalogue of publications, articles, and a newsletter. Information about the British census, including articles in
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 Off The Hypotenuse  Glenn Kenyon
Kenyon started this blog in pursuit of "a good discussion of resources, ideas, and innovative ideas for teachers of Algebra." Humorous videos, comic strips, and posts, which date back to March of 2007, have included "Math Lessons learned from Karate,"
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 One Wolf Howls  Scotti Cohn, illustrated by Susan Detwiler
This children’s book uses the months of the year and the numbers 1 through 12 to introduce children to the behavior of wolves in natural settings. The site also offers free educational resources, including teaching activities, math quizzes, related websites,
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 Online Innovation Institute (OII)  Ferdi Serim
The OII provides educators with a learning environment to support integrating the Internet into their individual teaching styles, offering a combination of online and onsite collaborations in which participants develop projects to use in their classrooms.
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 online intervention.com  Pearson Education
onlineintervention.com assesses students' performance in specific skills and prescribes customized intervention activities, automatically generating summary reports for both teachers and students. Register to take online quizzes, play games, and use learning
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 Online Math Applications  Leung, Jiang, Jiang, Chiu, Klopfer, Chiu; ThinkQuest Junior
Activities, examples, problems, and online quizzes about math applied to real world situations in investing (a stock market simulation game), music (classical MIDI files), history (biographies and anecdotes), science (astronomy, computers, 'math in the
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 Online Math Courses  Internet Academy (IA)
Distance learning for high school students, who pay a fee and can obtain credit. Uses Academic Systems software (PC only, no Macs). See the Algebra III Index of Lessons. Includes a Glossary.
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 Online Math Games  Ramona Pasca
Free Flash 6 math games and worksheets.
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 On Thin Spaghetti and Nocturnal Animals  Don Cohen (The Mathman)
Function and Graphs for Children. Guess My Rule; Graphing; The Shuttle Puzzle; The Tower Puzzle; The Nautilus Shell. Sample problems with some answers from Chapter 6 of Don Cohen's worksheet book.
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 Oranges Project Page  Debbie Lewis; The Levering School, Philadelphia, PA
An eighth grade project. Students use measurement to investigate the proportional relationship between the edible part of an orange and the peel or inedible part of a orange. They investigate different types of oranges such as navel, blood, and clementines
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 Orbifold Pinball  Yevgeniy Dodis; The Geometry Center
A game in which you roll a ball on an unusual playing field. The game board is like ordinary pinball in that it features 'bumpers' off which the ball can bounce. But in this game, the board is 'curved' in such a way that a ball barely missing the bumper
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 Order Of Operations (SMILE)  Bernice E. Holloway, Bellwood School District 88
A lesson designed to teach students to use grouping symbols and the standard order of operations to simplify numerical expressions; to use the order of operations to evaluate variable expressions; and to use the calculator and computer to solve numerical
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 Original Lesson Plans  Mathematics  Thirteen/WNET New York
Original Webbased activities developed by Thirteen Ed Online Master Teachers. Each lesson consists of an overview with learning objectives, procedures for teachers, and "organizers" for students  handouts, bibliographies, and other materials. Math
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 Our Backpack Data: Making Conclusions from Graphs  William Thill
Students match different statistical questions from backpack data to an appropriate visual display. They choose graphs to answer the questions and make welljustified conclusions about each question. As an extension, students may create a new question,
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 Our Town (The Weather Unit: Math Application)  Collaborative Lesson Archive
A lesson that uses and/or introduces new tools in geography, math, and science to make observations and draw conclusions on the local temperature variations in your area. Colorado State Standard addressd: Students use algebraic methods to explore, model,
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 Oware! 'The National Game of Africa'  Sapient Software
Oware is an winning numbers game, learned in a few minutes, that may take years to master. Downloadable freeware version, for Windows. Oware is more commonly called Wari in much of West Africa and where it is played in the New World. It is one of a large
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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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 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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 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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 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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 Paper Toss Shootout (SMILE)  Edwina R. Justice, Gunsaulus Scholastic Academy
A lesson for grade 8 designed to teach students to use class data to calculate percentages; participate in a group activity; relate this activity to NBA (National Basketball Association) stats; and calculate select percentages for NBA Finals data. From
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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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 Parallel lines and Angles (SMILE)  Earl M. Singleton, III, Daniel Hale Williams School
A lesson designed to teach students to identify the names and measurement of angles formed when parallel lines are intersected by a transversal. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science
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 Paso Partners: Integrating Mathematics, Science, and Language  Southwest Educational Development Laboratory (SEDL)
A twovolume curriculum and resources guide for K3 educators, designed to help teachers increase achievement of Hispanic children whose first language is not English. Preceding each complete unit in English is a Spanish version of background information
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 Passy's World of Mathematics
Lesson outlines by this Australianborn math teacher include Venn diagram word problems, combining like terms, translate word equations, and isometric drawing and 3d cubes; PowerPoint presentations include traversable networks, sharing using ratios, real
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 PAT Online: Reports from the Practical Algebra Tutor Project  PACT Center, Carnegie Mellon University
An intelligent tutoring system, a sort of modified spreadsheet system, based on a theory of cognition developed by John Anderson and the NCTM standards. Try it out online, or: read articles about education, technology, and computer science; explore background
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 Pat's Math & Problem Solving Links  Pat McQuatty
Site recommendations from the math consultant for the Western Quebec School Board. See, in particular, Special Days (Hundredth Day of school, Math with the number 2000  twenty suggested math activities for the year 2000). Also mathrelated links for
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 Pattern Based Reason  Alan Selby
This book surveys rule and pattern based thought in daily life, society, science and technology. The first chapters show how reliable implication rules can be employed one at a time or one after another to arrive at conclusions. The middle chapters describe
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 Pattern  Drew, Wallace; Mathematics Across the Curriculum, Dartmouth College
An interdisciplinary course in textile design and elementary group theory. Syllabus, course pages (notes, figures, questions, group work and homework), final project and class artworks from a 1996 math and art crosscurricular class at Dartmouth College.
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 Pattern Exploration: Integrating Math and Science for the Middle School  Martin Logan et al.
Download PDFs of lesson plans from units such as The PascalSierpinski Connection, Branching Patterns in Trees, Lessons in Paper Folding, Fractal Wallhanging, Patterns in Nature, Scaling and Dimension, and more. With accompanying Java applets and Cabri
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 Patterns in Mathematics (Teachers' Lab)  Annenberg Media
This lab, based on the professional development series and workshops broadcast on the Annenberg/CPB Math and Science Project Channel, explores patterns as they occur in logic, numbers, and words, focusing on how to develop "function sense" without simply
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 Patterns, Patterns, Everywhere  Nina Heal
Three lesson plans: an internetbased research project on patterns; connections between the arts of M. C. Escher and quilters; and a technologyenriched tessellations lesson. Includes a teacher resource page with rubrics.
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 PBS TeacherLine  PBS
A professional development resource delivering courses online for PreK12 teachers. Find course dates, graduate credit opportunities, and other information. Download the course tour for a preview of the experience of taking a course. See also the Virtual
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 PBS Teachers: Math  PBS Teachers
The Public Broadcasting System's Math Service, combining computing and telecommunications technologies to offer interactive data services and interactive video and voice services for education based on the NCTM Standards. The site features: resources,
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 Pédagogie Mathématiques  Académie de Rennes
De nombreux documents pédagogiques (du collège au BTS), des jeux ainsi que d'excellents exemples d'utilisation des T.I.C.E. (technologies de l'information et de communication pour l'enseignement) des maths.
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 Pearson Learning  Dale Seymour Publications
A leading publisher of educational materials, emphasizing math, science, and the arts. The site contains: an online catalog; math curricula include: CMP (the Connected Mathematics Project) and Investigations (Investigations in Number, Data, and Space,
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 Peaucellier's Linkage  Evelyn Sander, for Math 5337, The Geometry Center
Peaucellier's Linkage is a simple toy that could be constructed using straight rods attached together. The lab gives instructions for constructing and studying the linkage in Sketchpad. It then uses Sketchpad to explore the geometric properties of inversion,
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