 Logicville
Anagram, chess, cryptarithm, cryptogram, doublet, logic, mathematical, magic word square, and tangram puzzles. Select a puzzle at random; solve the puzzle of the week. Interactive puzzles require Java.
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 Long Division  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about long division, with stepbystep explanations.
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 Lure of the Labyrinth  Learning Games to Go (LG2G)
In this free online adventure game, middleschool prealgebra students rescue their pets, combat mysterious monsters, and embark on whimsical math missions to gain a better understanding of proportions, fractions, and ratios, variables and equations,
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 MAA Bookstore  Mathematical Association of America
A searchable list of books, with descriptions, in the following categories: Algebra; Analysis; Applied Mathematics; Calculus; Career Information; Computing and Computers; Elementary Models; Games, Puzzles, and Popular Exposition; Geometry and Topology;
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 Mag's 3x3 Rubik's Cube Solution  Tom Magliery
A small collection of operations for the 3x3 Rubik's Cube, which assumes that you already know how to get one entire face solved; this means not only having all of one color on one side, but also having those 8 pieces in the proper position with respect
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 Make Math More  Make Math More, LLC.
Activities, lesson plans, extensions, teacher guides, student worksheets, and other materials created and sold by a Cleveland middle school teacher to engage his students by making math relevant to their lives: "Probability of Rock Paper Scissors"; "Creating
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 Making of America Books  University of Michigan
This digital library of primary sources in American social history includes dozens of schoolbooks on arithmetic and other mathematical subjects that date to the antebellum period through reconstruction. Search or browse scanned graphics or transcribed
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 Mango Math  Mary Curry
Gamebased math lessons and accompanying videos which make use of manipulatives such as dice, spinners, counters, play money, and laminated game boards with dry erase markers. Mango Math bundles its lessons and game materials by grade for sale in prepackaged
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 Marcy Cook Math  Marcy Cook
Cook offers mathematics inservice workshops for elementary, middle, and junior high school teachers and administrators. She has written numerous books for classroom teachers, as well as sets of tiling and task cards for use in the classroom, and manipulatives
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 Mastering Mastermind  Ivars Peterson (MathTrek)
"Games offer wonderful playing fields for developing mathematical problemsolving skills. For Mathew Mitchell of the School of Education at the University of San Francisco, the preferred training ground is a classic game called Mastermind. "Students young
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 Math Challenge  Whitehousekids.gov
A new challenge is posted each Monday for students in elementary, middle, and high school. Type in your numerical answer, and the site checks it for you. Also see the Open Challenge and the archive of past problems, which date back to August, 2004, and
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 Math  Don Potter
Links and resources include the 1878 publication First Lessons in Arithmetic, a family heirloom that this teacher at Odessa Christian School (Texas) has scanned chapter by chapter, complete with woodblock illustrations and "slate exercises." From the
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 Mathematical Problem Solving  Wilson, Fernandez, Hadaway, Dept. of Mathematics Education, Univ. of Georgia
A paper about problem solving, which has a special importance in the study of mathematics. A primary goal of mathematics teaching and learning is to develop the ability to solve a wide variety of complex mathematics problems. Learning to solve problems
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 Mathematics  Alameda County Office of Education
Resources include 5th and 6th Grade CST Released Test Questions with Reasoning; FlashPapers and PDFs of the hundreds chart, multiplication table, "tell me fast" dots, ten frames template, and tips for memorizing multiplication; and Philip Gonsalves' PDF
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 Mathematics Software  Merit Software
Mathematics programs including Basic Algebra ShapeUp, PreAlgebra ShapeUp, and Word Problem ShapeUp. After an assessment, the software helps students by breaking down problems into small, easily understood steps. Stepbystep tutorials introduce each
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 Mathematics Worksheet Factory  Schoolhouse Technologies Inc.
Software to download and purchase to create math worksheets for student practice in basic addition, subtraction, multiplication, and division or practice in more complex mathematical operations including whole number, fraction, and decimal operations,
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 Math in Motion: Origami in the Classroom, K8  Barbara Pearl
Workshops and a book which use an interdisciplinary and manipulativebased approach to teaching mathematics, supporting the Common Core State Standards for Mathematics (CCSSM) and unfolding a positive attitude toward math and learning. Barbara Pearl developed
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 Math Is Power Math Puzzles  National Action Council for Minorities in Engineering (NACME)
Six Shockwave games. CodeBreaker requires using trial and error to deduce the correct string of colored circles, given feedback on position and quantity. In Space Tag, two players take turns moving on a grid, one of them attempting to occupy the other's
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 Math Kangaroo  Maria Omelanczuk
Math Kangaroo's international "notselective competition" recognizes all students who participate in its 75 minutelong multiple choice test: "Each participant is seen as a winner and receives recognition and gifts on the test day in March." Open to any
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 Math Learning Center (MLC)  Gene Maier
A nonprofit Oregonbased educational organization that develops and publishes curriculum materials, provides continuing education for teachers, consults with educational agencies, and provides opportunities for parents and others to become knowledgeable
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 Math Meet  Alex Kasman
Samples of the Annual College of Charleston Math Meet include PDFs of recent written tests; "AllDay Sprints" such as coded quotes, scramble, polymath, grids sprint, and "Blatant Propaganda Sprint"; math team relay; math brainstorm; and "marathons" 
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 MathPickle  Gordon Hamilton
Free videos that pose "rich math gems": Fibonacci Mutant Bunnies, Amoeba Squares, Kajitsu, Locker Room Prank, Area and Perimeter of Animals, Ballast Puzzles, and more. Select a grade band for PDF solutions, presentations in PowerPoint and Keynote formats,
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 The Math Place  Frank Sobierajski and Mickey Jo Sobierajski
Narrated PowerPoint presentations, problems, and video files of student solutions  some with references to versions published in journals such as Mathematics Teacher and supporting documents such as Geometer's Sketchpad sketches: Newton's Square Root
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 Math Reasoning Inventory  Scholastic
An online formative assessment tool for the Common Core State Standards (CCSS) math domains of number and operations. Watch Math Reasoning Inventory (MRI) clips of facetoface interviews of students as they reason and explain their strategies, demonstrate
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 Mathsational  Jennifer Abel
Blog by a math teacher at a suburban public high school in Lancaster, PA. Posts, which date back to June, 2015, have included "My first ever conference presentation & more on SBG"; "MTBoS Love — A Plethora of Activity Resources"; "Simplifying,
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 Math Seven and Eight  Jeff LeMieux
Oak Harbor (WA) teacher Jeff LeMieux' hyperlinked lesson plans and problems for his seventh and eighth graders, who use Glencoe's Mathematics Applications and Connections textbook. Also, links to Mr. LeMieux' old lessons and lessons at Microsoft Encarta
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 Math Stuff  Strategic Education Research Partnership
Makers of Tools for Sensemaking; the 5 × 8 card, an observation protocol; AlgebraByExample, sets of algebra problems that prompt students to analyze and explain errors in wrongly worked examples; and poster problems for sixth and seventh graders,
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 Maximize Volume of a Box  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about maximizing the volume of a box, such as "Find the formula for the greatest volume box you can make from a sheet of cardboard with differentsized corners cut out of it."
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 Maximizing Cylinder Volume  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about maximizing the volume of a cylinder, such as "We are excited to unveil a new feature this month, Site Map.Find the largest possible volume of a right circular cylinder that is inscribed in a sphere of radius r."
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 Mean, Median, Mode, Range  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about mean, median, mode, and range, such as "When is it appropriate to use the arithmetic mean, and when the geometric mean?"
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 The Means  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Two similar and oftenconfused problems, the difference between them not immediately obvious, showing that depending on the circumstances, to determine the average speed of motion, computations based on the same basic formula (S = D/T) may have to follow
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 Measuring with Two Containers  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about using two different containers to measure out a third quantity, such as "How can you measure 7 liters using only 4liter and 9liter pails?"
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 Medicine and Mathematics  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about medicine and mathematics, such as "How do doctors use math?"
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 Metacognition (Learning and Mathematics)  Alan Schoenfeld; Math Forum
In his 1987 book, Cognitive science and mathematics education, Schoenfeld wrote a chapter called "What's all the fuss about metacognition?" in response to a challenge from mathematicians (among them Joe Crosswhite, Henry Pollak, Anna Henderson, and Steve
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 Meters Squared or Square Meters?  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about the difference between saying "units squared" and "square units," such as "What is the difference between 10 square miles and 10 miles square?"
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 Metric Measurements  Math Forum, Ask Dr. Math Common Question
Tables of metric measurements for length, volume, mass, and weight, with equivalences, prefixes, and abbreviations.
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 Michael Serra
From the author of Discovering Geometry: An Investigative Approach and Smart Moves: the Games and Puzzles series; videos such as DG Investigations and "How to Teach Math Anxiety"; articles and handouts on cooperative learning; speaking engagements and
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 Microsoft Math Partnership
Through partnerships with eight area school districts and the Puget Sound Educational Service District, the Microsoft Math Partnership (MMP) provides support to schools to help students become critical thinkers and proficient in mathematical skills and
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 Mike's Math Club  The Milken Family Foundation
A curriculum enrichment program, Mike's Math Club provides "handy hints" that promote mastery of such basics as doubledigit multiplication, and math games that show elementary school students how to use logic and deductive reasoning to create strategies
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 A Million/Billion Seconds  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about millions and billions of seconds, such as "What is a million seconds in weeks, days, hours, minutes, and seconds?" and "How can I work out the number of seconds since 1980, taking leap years into account?"
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 Mister, is this right?  Joey Kelly
Blog by a high school math teacher at a STEM Academy in the Boston Public Schools. Kelly explains the title of his blog as setting a tone on two levels: "I don't want my students asking it. This question is emblematic of the culture of answergetting
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 Mixture Problems  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about mixture problems, such as "How many liters of a 14 percent alcohol solution must be mixed with 20 liters of a 50 percent alcohol solution to get a 20 percent alcohol solution?"
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 Monkeys Dividing Coconuts  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about monkeys dividing coconuts, such as "A monkey divides a pile of coconuts into three, tosses the extra one, and takes his share...."
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 MOTIVATE  Univ. of Cambridge, UK
MOTIVATE is a project incorporating a series of videoconferences, run by the Millennium Mathematics Project at Cambridge. The objectives of MOTIVATE are: to enrich the mathematical experience of school students, to broaden their mathematical horizons,
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 Mr. Pitonyak's Pyramid Puzzle  John S. Pitonyak
A webquest in which students are divided into construction teams that research the cost of building a pyramid, explore actual pyramids through online exhibits, and submit calculations that they would use to build their pyramid. The site includes instructions,
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 Mr. Vaudrey's Class  Matt Vaudrey
Blog by a secondary educator who "wears costumes, plays loud music, stands on desks, and shows pictures and video — all to make math meaningful for his students." The contents of mathematical posts, which date back to January, 2008, have included
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 Multiplying by Zero  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about multiplying by zero, such as why zero turns other numbers that clearly have a greater value to zero when multiplied?
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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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 Music and Mathematics  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about music and mathematics, and pitches, tones, and musical scales, in particular
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 Negative Exponents  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about negative exponents, from simplifying nested negative exponents to whether multiplying by 10 to the negative 3rd power is the same as dividing by 10 to the positive 3rd power.
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