 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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 Maths Education and all that!  Rebecca Hanson
Blog by a UK lecturer in education and specialist in online discussion forums. Posts about maths education, which date back to April, 2011, have included "Developing a scaling primitive in multiplication and division"; "Visual Models in Arithmetic Operations";
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 The Maths Magpie
"Loving shiny teaching resources and ideas  mathematical or otherwise." Blog posts, which date back to July, 2013, have included "What students see versus what the examiner sees," "Maths Vocabulary activities," "Posters for BODMAS / BIDMAS Misconception,"
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 Maths? No Fear!  Matt Skoss
Wiki for sharing practical ideas that engage kids in working as a mathematician, strategies for using Web 2.0 tools, and more. Become a member to access notes and other resources on the structure of maths tasks, problem solving, and more.
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 Maths Outdoors  Juliet Robertson
Blog posts from an education consultant "passionate about getting children outside." Posts on learning math outside with a kinesthetic emphasis, which date back to September, 2008, have included "Leaf Logic," "Investigating Right Angles with Sticks,"
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 MathStar  Center for Distance and Online Learning, LA County Office of Education
MathStar seeks to improve the teaching and learning of mathematics in middle schools through the use of interactive technologies. The project addresses these issues systemically, through an intensive collaboration between middle schools, colleges and
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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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 MathSugarOff  Priscilla Bremser
"Notes on mathematics teaching and learning at all levels" by a Middlebury College mathematics professor who works with K8 teachers in the Vermont Mathematics Initiative (VMI) professional development program and conducts her undergraduate classes with
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 Math Teacher Mambo  Shireen Dadmehr
Blog by a veteran high school teacher in Texas. Posts, which date back to January, 2005, have included "TAKS TAKS TAKS," "English Practice in Math Class," "Fraction Song," "Reviewing Angst," "Spaghetti Sine Curves," "Blocks & Pieces," "Memory Wheel,"
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 Math  Teaching Channel
Browse and search Teaching Channel's video showcase of inspiring and effective math teaching practices in America's schools. Topics include class culture, engagement, differentiation, collaboration, "new teachers," and Common Core State Standards (CCSS).
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 Math Thinking  David Wees
"Sharing thinking about math from students": a collection of work by students that teachers have not taught them explicitly how to do. Wees elaborates that "the idea or technique a student uses does not itself have to be completely original, just new
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 Math TODAY  USA TODAY and Texas Instruments (TI)
The alliance between Texas Instruments and USA TODAY Education provides teachers with activities that draw on USA Today's newspaper articles and TI graphing calculators to explore topics in algebra, geometry, precalculus, calculus, and statistics. The
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 mathtube.org  Pacific Institute for the Mathematical Sciences
Videos and slides of past seminar and lecture materials of the Pacific Institute for the Mathematical Sciences (PIMS). Educational clips include "Math Mania at the Middle School,"; several from Emerging Aboriginal Scholars conferences; "Small Number and
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 Mathy McMatherson  Daniel Schneider
Blog by a public high school teacher in Tucson, Arizona, who graduated from the University of Arizona Secondary Mathematics Education Program. Posts, which date back to July, 2011, have included "Teaching as Creation," "Fixing Bugs Part 2: Algebra &
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 McSquared  Audrey McLaren
Blog of "a teacher's realtime journey into Web 2.0" for "anyone who loves to teach, loves technology but feels easily overwhelmed by it, nevertheless feels compelled to learn how to use it, needs things explained real slow like, is not afraid to ask
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 Memory Joggers
An aide to learning multiplication and division facts, using multiple learning modalities including seeing, hearing, speaking, drawing, and moving. Site includes description of the product, a sample lesson, description of the teachers' package, and ordering
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 Metric Week  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: What are some activities I can use for Metric Week?
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 Middle School Math Rules!  Sherrie Nackel
Blog by a seventh grade math teacher for "sharing ideas with other teachers and hopefully networking with other dedicated and creative middle school math teachers." Posts, which date back to July, 2011, have included "Number activity for first day," "First
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 misscalcul8  Elissa Miller
Blog by a high school teacher of algebra and geometry who "expects to be the best teacher that has ever lived, to change the world, and to live wealthy." Posts, which date back to February, 2009, have included "This, My Friend, Is Learning," "7 Country
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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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 Modeling MiddleSchool Mathematics (MMM)  Bolster Education
Video lessons (on tape and via the Web) that examine the content and structure of five mathematics curricula: Connected Math Project, Mathematics in Context. MathScape, MathThematics, and Pathways to Algebra and Geometry. Included on the website are:
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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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 Musical Multiplication  Pat Stevens
Original songs help young students learn the multiplication facts.
Classroom tested method.
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 NewMedia Project: Integers  MathStar, Los Angeles County Office of Education
The NewMedia Project area of MathStar offers resources in mathematics for middle school teachers and students. The Integers unit is comprised of three lessons: Introducing Integers, Adding/Multiplying Integers, and Subtracting Integers. Each of the three
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 Nix the Tricks
Problematic vocabulary, notation, mnemonics, and other shortcuts reconsidered and "fixed" by teachers who "want to put a stop to the superficial, cheap tricks that have infected the teaching and learning of math." Submit your own trick, or debate and
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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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 nysmmn  Math Forum
The discussion group of the Association of Math Teachers of New York State's Math Mentor Network. This list is specifically for Elementary Math Mentors in the state, but welcomes all who have an interest in elementary math education. Read and search archived
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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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 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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 OR/MS Today
Online version of the magazine for members of the Institute for Operations Research and the Management Sciences (INFORMS). Current and previous issues, with full text of many articles; subscription information; software surveys; classified ads and list
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 Overthinking My Teaching  Christopher Danielson
Blog by a community college math teacher "interested in hard questions about teaching." Posts, which date back to July, 2009, have included "Wump hats," "An unnoticed rule for number language," "The end of word problems," "Cubeyness," "Cardinal and ordinal
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 Peter Ash's Thoughts on Math and Education  Peter Ash
Musings on doing and teaching mathematics, book reviews, and math problems both elementary and advanced from the creator of Cambridge Math Learning. Blog posts, which date back to August of 2007, include "Very Proper Fractions"; "Physical Models for NonEuclidean
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 Pi Day  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: What activities can I use for Pi Day?
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 Place Value  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: How do I provide my students with practice on their place value skills?
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 PlaceValue: ProblemSolving and Written Assessment Using DigitCorrespondence Tasks  Ross, Sunflower
This study examined the effects of researcherdeveloped lessons on students' understanding of two and threedigit numeration. Digitcorrespondence tasks, often used for individual interview assessment of place value understanding, were adapted to be
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 powersfulmath  Brooke Powers
Blog by a Kentucky middle school teacher sharing "some of the ways I try and bring math to life for my students." Posts, which date back to February, 2014, have included "Standards Based Grading When You Can't Really Standards Based Grade," "Why I Always
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 Proactive Play  Punitha Jayaraman
Articles on cognitive development research into, and activities to improve, spatial skills. Posts, which date back to October, 2012, have included "Hari Builds with Construction Set," "Piaget and van Hiele: Compare, Contrast and My Thoughts ...," "Hari's
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 Problem Solving  It Has to Begin with Noticing and Wondering  Hogan, Marie; and Alejandre, Suzanne
Middle school teacher Marie Hogan observed as the Forum's Director of Professional Development modeled a full cycle of the Problems of the Week (PoWs) in Hogan's West Covina (CA) classroom. This coauthored article about their experience around the PoW
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 Productive Struggle
Group blog, with most contributions by secondary math and science teachers, that aims to "push teachers to learn in the same way that we push our students to learn" and "work together to make our struggles productive." Posts, which date back to March,
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 Purplemath  Your Algebra Resource  Elizabeth Stapel
Algebra modules provide lessons, practical tips, hints, worked examples, and point out common mistakes in basic triangle length (trigonometry) values, calculators (what model to buy), canceling units, domain and range, exponents, factoring quadratics,
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 Pythagorean Puzzle (SMILE)  Earl Zwicker, Illinois Institute of Technology
A lesson that models the phenomenological approach to enable students to prove the Pythagorean Theorem on their own using puzzle pieces and working together.
From the Geometry and Measurement and Algebra and Trigonometry sections of a collection of almost
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 the radical rational ...  Pam Wilson
Blog by a National Board Certified Teacher (NBCT) of Algebra II and Geometry "in search of innovative ideas with a wellbalanced approach for the math classroom." Posts, which date back to July, 2011, have included "The Purpose of Life and The Quadratic
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 Ralph A. Raimi Homepage  Ralph A. Raimi
The University of Rochester Professor Emeritus' notes on math education and nontechnical
writings with a mathematics theme include Whatever became of the New Math?; Have we forgotten the value of memory?, a comment on the New York Regents' Bexamination
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 The Rational Number Project  Regents of the University of Minnesota
Lessons, modules, and entire curricula from an ongoing research project that advocates teaching fractions using a model that emphasizes multiple representations and connections among different representations. The Rational Number Project (RNP) has been
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 Reason and Wonder  Michael Fenton
Blog by a Fresno (California) junior high and high school mathematics teacher. Posts, which date back to March, 2013, have included "Estimation 180 Rocks"; "Quadratics Matching Activity, Take 2"; "Solved the Student Engagement Problem Yet? Me Neither";
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 Rebecca Newburn
Links to this California teacher's Math 7 blog, and to her professional blog, a "fusion of best teaching practices, integrating technology and increasing compassion in and outside of the classroom." See also Newburn's select compilation of explanations,
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 A Recursive Process  Dan Anderson
Anderson's blog, which dates back to June of 2010, has included posts such as "Robocode & Math," "Standards Based Grading," "Cake:Frosting (A look into a proper ratio of real math:cool tech)," "Paper Towels WCYDWT (What Can You Do With This?)," "Two
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 Reflections in the Why  Chris Hunter
Blog by a K–12 numeracy helping teacher in Vancouver. Posts, which date back to September, 2010, have included "Linear Functions — Concretely, Pictorially, Symbolically"; "Math Manipulative of the Month — Base Ten Blocks"; "A Linear Functions
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