 Mister Goodmath's 'Cool' Challenges of the Week  Mike Rooney; Welleby Elementary School, Sunrise, Florida
More than 30 challenge problems, with hints but no solutions. Join "Gator" and pack your bag for an incredible journey through real life challenges. The first problem listed on the menu is always the most current challenge being attacked by Welleby students
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 Mistry Maths  Manoj Mistry
Free and fee PowerPoint UK KS3 and KS4 lessons, planned with OFSTED grading criteria.
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 M.I.T. K12 Math Games Lesson Plans  Wendy Huang, MIT Teacher Ed Program Manager
A collection of math games lesson plans to make learning math fun and engaging for middle and high school students. Written by MIT teacher education students.
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 Monthly Themes  NRICH Maths, Univ. of Cambridge
Past problems from the NRICH Online Maths Club, archived by month. Each problem has a symbol indicating the stage, which tells you how little or how much mathematics you need to know to solve the problem but is no indication of its difficulty. The five
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 Montpelier Portfolio Program (Mathematics)  Montpelier Public Schools
A site that invites students to use creative strategies to solve story questions. Students choose a problem to solve and send in the solution, showing how they found it; assessments of their efforts are returned via email. Questions to help guide students
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 Moogie Math
Windows software designed to prepare students for the Ohio 4th and 9th Grade Mathematics Proficiency Test. Other states can also be accomodated (specifically, Texas, Florida, and Nevada). Downloadable and online demos. Includes ideas for funding resources
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 MooMooMath  Bryon Blankenbecler
Hundreds of instructional whiteboard video primers, examples, and practice problems with step by step solutions. Formerly a public school teacher and tutor, Blankenbecler now teaches online, through a virtual school.
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 More Meaningful Math  Monika Schwarze
An international project to motivate students ages 12 to 16 with problems that show the importance of mathematics in real life and related to other subjects, and to enrich their teachers' methodology. Browse the file archive of freely downloadable documents
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 Morley's Pursuit of Incidence  Cut the Knot!, Alexander Bogomolny
With all the geometric context of his theory (applets are provided for explorations), Morley's method is purely algebraic, founded on the theory of complex numbers. Curves are mappings x = f(t) from the unit circle. x = X + iY, where X and Y are the plane
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 MowMowMow'S Cabri Room
Cabri files for highschoollevel geometry. In English and Japanese.
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 Mozaik Kiadó  András Ringler
Computer animations for teaching mathematics include geometrical solutions of quadratic equations. Also available in Hungarian.
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 M Puzzle: a Math Line Puzzle  Math Forum
Construct nine triangles by drawing three straight lines through a capital M. Questions, hint, solution.
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 mrbartonmaths.com  Craig Barton
A free website for teachers, pupils and parents aimed to get everyone enjoying their maths a bit more. For teachers there are bucket loads of original resources, software tutorials and reviews; for students there are pupilfriendly notes, advice about
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 Mr. Brandenburg's List of Recommended Books on Math and Science  Guy Brandenburg
A list of over 140 math and sciencerelated books, mostly recent, for geometry students to choose from, read, and do a report on. This new list is organized by topic: astronomy; bad science; biography: mathematicians + scientists; biology/life science/evolution;
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 Mr. Hoffman's Home Page  Jim Hoffman
Assignments, notes, exams and interactive vocabulary quizzes (with answer keys) from Hoffman's own math and twodimensional computer animation high school classes. These materials are based on Saskatchewan Provincial Curriculum, and include Math 9, Math
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 Mrs. Glosser's Math Goodies  Gisele Glosser
Interactive math lessons that work online and offline in a Web browser, and provide immediate feedback to students, with in addition Worksheets (on circumference and area; exponents; expressions and equations; integers; Ocean Math; order of operations;
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 MSTE Java  University of Illinois at UrbanaChampaign (UIUC)
Javabased activities submitted to MSTE, the Office for Mathematics, Science & Technology Education at UIUC. Topics include: best fit; box perimeter; Buffon's needle; CAD viewer; cereal box problem; chisquared test analysis of random marbles; cliff
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 Mucho Math  Jake Enfield
Flash program for students to learn math vocabulary and mental math tricks through best practice teaching methods (discovery learning, scaffolding, spiraling, and customized learning). Teachers can create an account and add one student for free to try
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 Mudd Math Fun Facts  Francis E. Su; Mathematics Dept., Harvey Mudd College
A site developed as a resource for professors wishing to enrich their courses with mathematical 'fun facts': more than 100 5minute math tidbits that can be used at the beginning of class to get students interested in mathematics. They are best used in
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 Multiplication and Areas (SMILE)  Albert Michael, Robert Fulton Elementary School
A lesson for grades 35 designed to teach twodigit multiplication using math facts; how to find areas of rectangles and squares using stamps and Lego pieces; and how to fill an order of items of equal and different prices and quantities. From the "Miscellaneous"
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 MultyGraphiX 2D & 3D function plotter  Sergey Petrov, ADC Software
Plot any mathematical 2D and 3D, explicit and parametric functions. Allows users to plot functions in Cartesian, polar, cylindrical, and spherical coordinates. Trial version available for this commercial software. Windows only.
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 Murderous Maths  Kjartan Poskitt et al.
Contents, descriptions of characters, updates, and "extra bits" for the books Murderous Maths; The Essential Arithmetricks; Desperate Measures; Do You Feel Lucky?; Vicious Circles and other Savage Shapes; The Phantom X; The Fiendish Angletron; The GCSE
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 Musing Mathematically  Nat Banting
Thoughts from a high school mathematics teacher on the teaching of mathematics, and the learning of mathematics. Posts, which date back to May, 2011, have included "Playing with Mean, Median & Mode," "Attaching a 'Why' to the 'How," "The Mathematics
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 Musings from Mrs. Galvan  Regan Galvan
Blog of "thoughts on teaching math and on promoting social, emotional wellness among my students and colleagues" by a selfdescribed fan of students creating digital portfolios in math. Posts, which date back to February, 2013, have included "Geometry
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 My Math Man  Francis (Bud) Leverone
Narrated slides and interactive practice to accompany Glencoe and Chicago textbooks on algebra and geometry topics.
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 MyMaths  Alan Jackson
A feebased repository of lesson plans, including "boosters" specifically for UK Year 9, "Grade D to C," and higherlevel GCSE students. A subscription also provides for MyMaths' class management system. Take a tour of the resources and sample lesson
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 Napoleon's Theorem  Cut the Knot!, Alexander Bogomolny
On the sides of a triangle construct equilateral triangles (outer or inner Napoleon triangles). Napoleon's theorem states that the centers of the three outer Napoleon triangles form another equilateral triangle. The statement also holds for the three
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 NASA Smart Skies FlyBy Math  NASA Airspace Systems: Ames Research Center
DistanceRateTime Problems in Air Traffic Control for Grades 59. Six rich, standardslinked problems, each with student worksheets and teacher guides and related materials. Each features a guided experiment for students to carry out. Worksheets provide
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 National Library of Virtual Manipulatives for Interactive Mathematics (NLVM)  Cannon et al., Principal Investigators; Utah State University
Java applets and other virtual manipulatives cover mathematics appropriate to grades K12, with a special emphasis on K8. Browse by grade band or by math topic: number and operations, algebra, geometry, measurement, and data analysis and probability.
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 Native American Geometry  Chris Hardaker
A physical, proportional geometry that originates from the simple circle. A growing body of architectural and iconographic evidence suggests this geometry was a relatively common tradition and has been practiced for at least 2000 years. The site is divided
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 Navworld  Joseph Portney
A center for the art and science of navigation, providing navigational "cerebrations," famous historical accounts, interviews and biographies. See Earthshapes, different ideas of what the earth would look like if it were one of 12 different shapes (physical
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 NCTM Standards (Standards 2000)  National Council of Teachers of Mathematics (NCTM)
NCTM's Principles and Standards for School Mathematics is the compilation of the lessons learned and experiences gained over the years since the 1989 Standards were released. The site features include: an online version of the Standards (including illustrations,
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 NECTAR Foundation: New Era Classroom, Technology and Research
A nonprofit foundation specialising in the development and marketing of educational software in the kindergarten to grade 12 program with a focus on mathematics software programs. It also develops and markets print, video, and audio materials for students
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 Nesting Software: PLUS (PaneL Utilization Software)
Software for reducing scrap and generating optimum layouts for cutting in sheet metal layout, fabrication, glass, building panel, and woodworking industries. Samples and free demo downloads.
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 Neufeld Learning Systems, Inc.
Mathematics programs designed to facilitate learning in destreamed classes as well as in home study and distance learning. Interactive programs for: algebra, equations, exponents, fractions, geometry, and integers. Understanding exponents and algebra
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 Neutral and NonEuclidean Geometries  David C. Royster; University of North Carolina at Charlotte
Course notes that include: Origins of geometry; spherical geometry; logic and the axiomatic method; proof; Euclid's mathematical system; incidence geometry; betweenness axioms; congruence theorems; axioms of continuity; neutral geometry; theorems of continuity;
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 New York Regents Exam Prep Center  Oswego City School District
A site dedicated to assisting high school students in preparing for the "new" New York State Math A Regents Examination. Covers Algebra, Geometry, and Algebra II/Trig. The materials featured for each topic include: general review/formula sheet, Regents
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 New Zealand Mathematics  Ministry of Education, New Zealand
Units and lesson plans organised by level and curriculum strand, in Maori and English, focusing on solving problems. Topics address levels 16 of the New Zealand mathematics curriculum and include probability, statistics, measurement, and geometry.
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 Nils Ahbel  Deerfield Academy, Deerfield, MA
Access Ahbel's Blackboard courses as a guest to preview his teaching resources and download Excel files in algebra, functions, statistics, and trigonometry.
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 The Noon Observation Project  Cathie Godwin, Kathleen Smith; College of Education, Univ. of Illinois at UrbanaChampaign
A joint effort among interested schools worldwide in accurately estimating the circumference of the earth. How to compute local noon at your location; the original 1999 form for submitting Noon Observations; an explanation of the formulas for computing
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 The North Carolina State High School Mathematics Contest  John Goebel
Download PDFs of recent contest questions and solutions, and see test statistics and item analysis. Read brief and detailed histories of the contest, rules, and more. The State Mathematics Contest was initiated in 1979 to provide state level competition
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 Not Just Sums  Emily Hillier, Not Just Sums
Teaching and learning resources from the U.K. Learn about the product range and educational philosophy, and try sample resources, a daily starter activity, and online games.
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 NOVA Teachers: Featured Teacher  PBS
Teachers' featured stories of a lesson plan using one of the NOVA films. Lesson titles include: Students Inclined to Study Galileo, Exploring Research Bias, Placing Value on Maya Math, Teaching with Trebuchets, Bridges Form Foundation for Geometry Unit,
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 NRICH Maths, the Online Maths Club  Univ. of Cambridge, UK
A project that aims to establish a permanent national centre for curriculum enrichment to provide mathematical learning support for very able children of all ages. The learning and enjoyment of mathematics are promoted through an Internet Newsletter and
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 The Nuffield Foundation
Math teaching and learning resources include freely downloadable Freestanding Mathematics Activities (FSMAs) and Applying Mathematical Processes (AMP) activities, a mix of investigations and practical explorations. The Nuffield Foundation works to improve
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 Numb3rs Math Activities  Cornell Department of Mathematics
Notes and activities on the mathematics behind each CBS television broadcast of the FBI crime series NUMB3RS, from the pilot episode through season five: Uncertainty Principle, Sniper Zero, Dirty Bomb, Assassin, Toxin, Backscatter, Two Daughters, Burn
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 Numbaland  Lomas, Derek; Ching, Dixie; and Sun, Jeanine
Four simple Shockwave Flash games for developing a sense of number concepts: Battleship Numberline (estimating position on the number line), Block Basher (in the style of Tetris, drop blocks of the same color to knock each other out by estimating positions
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 Number and Geometry  James Garner
An essay on the historical relationship between numbers and geometry.
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 Number Loving  Laura ReesHughes and Sharon Derbyshire
Freely downloadable PDFs, Microsoft Word documents, and PowerPoint presentations, organized by UK key stages, strands, and topics. The Number Loving blog offers new approaches for teaching maths and tips for classroom makeovers. Posts, which date back
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 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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