 Reflections of a Techie  Marsha Ratzel
Reflections "on using 21st century technologies to amplify learning," as blogged by a selfdescribed nerd who teachers middle grades math. Posts, which date back to July, 2003, have included "Finding the Little Truths of Math"; "Rational numbers need
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 The Republic of Mathematics  Gary E. Davis
The Republic of Mathematics™ was founded "to promote happy and productive mathematical experiences for all learners, democratize the learning and teaching of mathematics, and help empower students and teachers in their engagement with mathematics."
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 Research in Practice  Ben BlumSmith
A "math education research digest" by a former teacher, private tutor, and faculty member of Bard College's Master of Arts in Teaching program who went on to pursue his doctoral degree from the Courant Institute of Mathematical Sciences at New York University.
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 Right Brained Math  Brandon Price
"Searching for divergence and creativity in all that mathy stuff." Price teaches algebra, geometry, statistics, and robotics at Austin's Khabele School, an International Baccalaureate (IB) World School. His blog, which dates back to March, 2013, has
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 The Roots of the Equation  James Cleveland
Blog by a high school algebra teacher in New York City "trying to figure out how it all fits together ... [and] creating interdisciplinary problems, projects, and thinking." A Math for America (MfA) fellow, Cleveland has blogged since June, 2011, with
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 Sara VanDerWerf
Blog by a longtime teacher of secondary mathematics in the Minneapolis Public Schools and past president of the Minnesota Council of Teachers of Mathematics (MCTM). VanDerWerf spent several years leading mathematics at the district office and curates
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 Schoolhouse Rock
Schoolhouse Rock is one of many artifacts from the 1970s that still is in existence today. In the mid70s, ABC TV aired these short cartoons, which taught a generation about government, history, grammar, science, and math. The lyrics of all the songs
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 sciencetotouch  Jürgen RichterGebert
Projects for interactively visualizing science, from one of the coauthors of the Cinderella geometry software package: iOrnament, a drawing and explanation app for the 17 crystallographic wallpaper groups; ixquadrat, a museum exhibit of symmetry, Escher,
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 Sense and Dollars  Maryland Public Television
The Sense and Dollars project helps middle and high school students learn about and practice effective ways of earning, spending, saving, and investing money in a safe, interactive environment. Activities include: Earning Money (All About the Benjamins,
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 Show Your Thinking  Annie Forest
Blog by an instructional specialist in Illinois "passionate about giving all students an equitable math education, making thinking visible, purposeful tech, and teacher collaboration and reflection." Posts, which date back to October, 2013, have included
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 Simple City  Richard Elwes
Website of the author of, among other books, Mathematics 1001, How to Build a Brain (Mathematics without the Boring Bits), and Chaotic Fishponds and Mirror Universes. Prior to lecturing at the University of Leeds, Elwes earned his PGCE (QTS) in secondary
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 SINUS transfer  University of Bayreuth
Spurred by the outcome of the Trends in International Mathematics and Science Study (TIMSS), Germany launched a nationwide "model programme for increasing efficiency in mathematics and science education." Between 1998 and 2007, more than 1800 of the
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 Sometimes We Learn Some Math Too  Jacqueline Sheppet
Blog by a high school teacher in British Columbia. Posts, which date back to September, 2014, have included "Purple is the new math," "Forming a formative mindset," "A formula to understand," and "Do the ends justify the means?"
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 sonata mathematique  Rachel Kernodle
Blog by a high school math and learning specialist. Posts, which date back to June, 2011, have included "twitter math camp," "mathematical art," "i also want you to learn…," and "rational functions take two."
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 The Space Between the Numbers  Breedeen Murray
Blog by a math teacher and writer "about how these two aspects are inextricably linked together in my own person, and maybe in yours, too." Posts, which date back to June, 2010, have included "PinkSlip to Private School," "SBG, Hold the G," "A Different
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 square root of negative one teach math  Amy Gruen
Blog by a high school math teacher in Kansas. Posts, which date back to December, 2010, have included "Stations Review and Practice," "The Loop for Logs," "My Thoughts On Homework," "Everyone Failed (and What's Up With Probability?)," "Visualizing Volumes,"
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 Steve Leinwand
Publications, presentations, blog, and more by a Principal Research Analyst at American Institutes for Research (AIR). Freely download articles such as "Moving Mathematics Out of Mediocrity," "High Leverage Mathematics Instruction Practices," "Making
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 Students' difficulties with proof  Annie and John Selden; Mathematical Association of America
Keith Weber overviews research that addresses questions such as "What is proof and what is its role in mathematics?" and "How can the concept of proof be taught effectively?" Difficulties that students have with proofs include inadequate cognitive development,
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 Sybilla Beckmann Kazez
Biography, books, projects, papers, and presentations of the Josiah Meigs Distinguished Teaching Professor of Mathematics at the University of Georgia (UGA). Originally researching arithmetic geometry, Beckmann now considers the mathematical education
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 Teacherarium  Milvidskaia, Yekaterina; and Tebelman, Tiana
Teacher guides, statements of philosophy, assessments for growth, star rubrics, and more classroom resources by two eighth grade math teachers who "enjoy challenging our students through collaborative learning and sparking their mathematical curiosity."
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 Teachers TryScience
Free lessons, teaching strategies, and resources to spark students' interest in science, technology, engineering and math (STEM). The Teachers TryScience site features collaboration tools for discussing and sharing effective instructional practices. Teachers
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 Teaching and Learning Algebra pre19  The Royal Society and The Joint Mathematical Council (United Kingdom)
A policy document that addresses curriculum and teaching methods in algebra. The influences on pupils' experience of algebra within all aspects of the preuniversity education system were examined.
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 Teaching and Learning Geometry 1119  The Royal Society and The Joint Mathematical Council (United Kingdom)
A policy document that addresses the rationale for teaching geometry; its possible content; issues concerned with its effective teaching; and why this important subject, with such wide applications and a long history, remains one of the most difficult
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 Teaching and Learning Undergraduate Mathematics  The Mathematical Association (UK)
Read Talum newsletters, 1993  2000. Articles include "Learning to Teach"; "The Case for Geometry"; "Intuiting Mathematical Objects Using Diagrams and Kinetigrams"; "Teaching Mathematical Analysis"; and "Using a Theory of Learning in a College Mathematics
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 Teaching Contemporary Mathematics Conference  North Carolina School of Science and Mathematics (NCSSM)
Papers and talks presented at the conference. Download PDF files of Geometry and Programming: The Forgotten and the Avoided; Student Investigations in Algebra 2 and Precalculus; The Mantid: An Extended Data Problem; Errors and Power in Significance Tests;
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 Teaching Statistics  The Teaching Statistics Trust
A journal published three times a year for teachers of pupils aged 919. Includes articles on teaching statistics in mathematics, science, etc. and ideas and resources for teaching datahandling and probability. Regular features include: Classroom Notes;
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 Teach Kids Math With Model Method  Zach
Tutorials for parents or teachers, of the Model Method, widely used in Singapore Math by Singaporean teachers, tutors, and parents. Covers the method for basic operations, fractions, decimals, percents, averages, and ratio.
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 Tessellations  Robert Fathauer
A company that makes Puzzellations, Colorful Connectables, and Perpetual Patterns puzzles, plus a variety of other products inspired in part by the Dutch graphic artist M.C. Escher, but also by mathematicians such as Roger Penrose and Benoit Mandelbrot.
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 Thales' triangles  Joshua Bowman
Blog about "teaching and doing mathematics at a liberal arts college." Posts by this Smith College professor date back to July, 2006: "instability and control"; "the end of a good man's life" (on the death of mathematician Adrien Douady); "Klein's quartic
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 themathlab.com
Playful, interactive studentmade problems, games, drills, lesson ideas, tools, "magic," and more. Lessons include practice problems which, when solved correctly, generate passwords that grant access to "treasure rooms." Lesson ideas include Algebachee
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 Thinking Mathematically  Mark Chubb
Blog by a teacher and instructional coach in Canada. Posts, which date back to June, 2016, have included "Purposeful Practice: Happy Numbers"; "Concept vs Procedure: An anecdote about what it means to be good at math"; "Never Skip the Closing of the Lesson";
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 ThinkThankThunk  Shawn Cornally
Blog by an Iowa headmaster and teacher of science, technology, engineering, and math (STEM). See, in particular, Cornally's collection of posts on StandardsBased Grading (SBG) and ongoing series on Honors Calculus course lessons, titled "Calculus: A
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 Times Tables and Addition The Fun Way  City Creek Press, Inc.
A picture method of learning math facts, associating them with cartoons and stories and combining literature with math to reach all learning styles and increase retention of facts. Parents who want to help build selfesteem and increase math scores can
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 To Accumulate a Rate — Integrate!  Kaleb Allinson
Allinson teaches trigonometry and AP Calculus AB at Lake Stevens High School (WA), where he also serves as the math department head. He describes his blog as a venue to "help me reflect on my teaching.... and record the unique [ideas] I came up with for
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 A Tour of Fractions  Math Forum
The Web often seems more like a maze than an organized set of resources. To help you find what you need, the Math Forum presents a 'tour' of fractions, offering links to lessons, activities, and materials, questions and answers from Ask Dr. Math, and
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 A Tour of Measurement  Math Forum
A central resource for people teaching and learning about measurement. For teachers there are links to lessons and materials, questions and answers from Ask Dr. Math, and recommended software, grouped by level (elementary, middle school, high school).
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 Traditionalist Becoming NonTraditional  Christy Sutton
"It wasn't until I was already a teacher and took some math courses for Professional Learning that my rule following math approach was tested. Once I began my Masters Degree in K8 Math Ed from the UGA campus in Griffin my math world was really shaken
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 Tricks for Learning Math  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: What are some math tricks and mnemonic devices I can use with my students?
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 TRIUMPHS
TRansforming Instruction in Undergraduate Mathematics via Primary Historical Sources (TRIUMPHS) creates freely downloadable materials for use in the undergraduate mathematics classroom which teaches content based around original mathematical sources such
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 The Tutor House: math  Adrianne Meldrum
Tutoring elementary and middle school students, Meldrum would often "hunt the Internet for tips and helps on teaching concepts to my students. I find great stuff, but I wanted somewhere central that other tutors like me could find them...." Every Wednesday
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 Unification of System of Linear Equations, Matrix Inversion, and Linear Programming  Prof. Hossein Arsham; University of Baltimore
Remarks on unification of systems of equations, matrix inversion, and linear programming, that is, the links between these topics. Includes references and further reading.
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 Utah Elementary Mathematics  David A. Smith
Blog of conceptual frameworks and other classroom resources for Utah educators implementing the Utah Core State Standards. Smith, the Elementary Mathematics Specialist at the Utah State Office of Education (USOE), has posted since October, 2013; and also
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 The Verbal Math Lesson  Michael Levin, Charan Langton
Books for teaching math topics verbally through word problemsno worksheets, no writing. The approach is intended to be fun for children and to develop mental short cuts.
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 Wheeler's Thoughts on Teaching  Laura Wheeler
Blog by a Canadian high school teacher in Ottawa, Ontario. Posts, which date back to October, 2012, have included "Assessment & Evaluation in the OCDSB"; "BYOD Classroom Management"; "Quadratic Visual Patterns #3actmath #MFM2P with Linking Cubes"; "When
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 When Math Happens  Dane Ehlert
A Texas high school teacher's blog of 3 Act Math, estimation, and other lessons, each with alignments to the Common Core and TEKS. Posts, which date back to May, 2012, have included "How To Praise Students," "Exponential Functions ReEngage," "Paul Sturgess,"
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 Why It Is Important to Learn Algebra  EdSource
This PDF document is a parent/student guide explaining why Algebra I is a required subject, how it helps prepare students for the future, how Algebra I fits into the student's high school math program, and what parents can do to support their student's
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 Without Geometry, Life Is Pointless  Avery Pickford
"Musings on math, education, teaching, and research" by a teacher. Blog posts, which date back to May, 2010, have included "What Makes a Problem Great," "Habits of Mind," "My 6th Grade Version of Algebra," "Technology in School: Where's My Hovercraft?
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 Writing to Develop Understanding: The Math Forum @ Drexel's PoWs  Suzanne Alejandre
What can we ask students about their problem solving that will help them the most? This article, originally published in the December, 2006, issue of the CMC ComMuniCator, journal of the California Mathematics Council, addresses that question by examining
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 www.multiplication.com  Krimsten Publishing
Ideas and products to help students understand multiplication and learn their multiplication facts. In Krimsten's rhyming method, for example, visualize a product such as 3 × 4 = 12 as a story about a tree ("three"), door ("four"), and elf ("twelve").
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 Yo: A Math Teacher's Blog  Nico Rowinsky
Blog by the Toronto math teacher who wrote Sally Strange: And How She Learned to Stop Worrying and Love Grade 7 Math. Posts, which date back to September, 2012, have included "Teaching an Old Word Problem New Tricks: PART II," "What happens when you've
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