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  1. 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 ...more>>

  2. 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," ...more>>

  3. Palmer's Ponderings - Christina Palmer
    Blog by a high school math teacher in Massachusetts. Posts, which date back to June, 2013, have included "I wonder...... (Cheerios in a chimney box)," "Four = Eight (almost)," "Today I Shut Up," "State Test Questions That Make Me Angry," "TMC14," "Compounding ...more>>

  4. Place-Value: Problem-Solving and Written Assessment Using Digit-Correspondence Tasks - Ross, Sunflower
    This study examined the effects of researcher-developed lessons on students' understanding of two- and three-digit numeration. Digit-correspondence tasks, often used for individual interview assessment of place value understanding, were adapted to be ...more>>

  5. Potent Problems - Institute for Studies in Educational Mathematics
    A database of problems that deepen understanding of mathematics through multiple answers, approaches to an answer, interpretations, extensions, perspectives on a mathematical idea, layers of complexity, or algorithms. Potent problem content topics include ...more>>

  6. Problem Problems - Michael Pershan
    Blog by a New York City math teacher trying "to better understand the connections between problem solving, learning, and teaching." Posts, which date back to May, 2015, have included "Getting Stuck on a Geometry Problem," "Minimalistic Hints Are Still ...more>>

  7. Problems of the Week - Math Forum @ Drexel
    Our goal with the Problems of the Week is to engage students in non-routine, constructed-response mathematics investigations that integrate writing with problem solving in the math classroom. In addition to the Current PoWs and the Problems of the Week ...more>>

  8. Problem Solving Island - Samuel A. Rebelsky
    Challenging open-ended word problems on the topics of games, such as Blockade, Finger Multiplication, and The Word Pyramid; puzzles such as Error Correction, Error Detection, The Fake Coin, Friday the 13th, and Leap Birthdays; and problems based on figures, ...more>>

  9. 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 co-authored article about their experience around the PoW ...more>>

  10. Project Search: Math - Buck Institute for Education
    Dozens of studies and summaries of research on project based learning (PBL) in math. The Buck Institute for Education (BIE) is creates and disseminates products, practices and knowledge for effective PBL. ...more>>

  11. PROMYS: The Program in Mathematics for Young Scientists - Boston University Department of Mathematics and Statistics
    PROMYS encourages ambitious high school students to explore the creative world of mathematics. Each summer, approximately 60 high school students from around the country gather on the campus of Boston University for six weeks of rigorous mathematical ...more>>

  12. Questioning My Metacognition - Graham Fletcher
    Blog by a K-5 math coach "continually seeking to find what it is that develops an intellectual need in students and makes them want to learn." Posts, which date back to August, 2013, have included "To Run or Walk in the Rain," "Underestimating Estimation," ...more>>

  13. 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 well-balanced approach for the math classroom." Posts, which date back to July, 2011, have included "The Purpose of Life and The Quadratic ...more>>

  14. rawsonmath - Pamela Rawson
    Blog by a math teacher at STEM-focused public charter high school. Rawson, who worked for 25 years in traditional public high schools in and around southern Maine, describes herself as "still learning." Posts, which date back to August, 2012, have included ...more>>

  15. 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"; ...more>>

  16. Rebuilding an Empire - Mike Waechter
    Blog by a middle school math teacher in northern California. Posts, which date back to March, 2015, have included "The Good, The Bad and A Moment"; "NBA Desmos Scatter Plots"; and "Barbie Zip Line." ...more>>

  17. The Recovering Traditionalist - Christina Tondevold
    Blog by a "former middle school math teacher who learned, and taught, math the traditional way. That was until I realized that many of my students did not learn math the same way I did. So, I embarked on a journey to increase my understanding of mathematics ...more>>

  18. Reflections in the Plane - Bridget Dunbar
    Blog by an instructional resource teacher in a middle school in Maryland. Dunbar describes herself as having "loved math my entire life" and a person who does not "remember having a bad teacher — only teachers who made me love math more. I even ...more>>

  19. Reflections in the Why - Chris Hunter
    Blog by a K12 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 ...more>>

  20. Reflections of a High School Math Teacher - Dave Sladkey
    Blog by a teacher at Naperville (Illinois) Central High School. Posts, which date back to March, 2008, have included "Thinking Blocks," "School is a Place to Learn from your Mistakes," "More on When Students Teach," "Pop Goes the Weasel and the Quadratic ...more>>

  21. Reflections of a Techie - Marsha Ratzel
    Reflections "on using 21st century technologies to amplify learning," as blogged by a self-described nerd who teachers middle grades math. Posts, which date back to July, 2003, have included "Finding the Little Truths of Math"; "Rational numbers need ...more>>

  22. Reflections on Holes in Graphs and Reasoning - Zach Cresswell
    Blog by a Michigan teacher of AP Calculus, Pre-calculus, and Algebra II who has taken graduate courses such as "Creativity in Teaching & Learning." Posts, which date back to May, 2013, have included "Trying a bit of '3 Act Math'"; "Multiple Methods for ...more>>

  23. Re-Learning To Teach - Justin Aion
    Blog by an eighth grade teacher who "decided that I want to be a better educator. These are my exploits and thoughts as I strive to rediscover my passion and purpose." Posts, which date back to August, 2013, have included "Problem Solving, Vocab and Frustration"; ...more>>

  24. Rich Maths Tasks to Engage - East Midlands Maths Network
    These teacher-made rich maths tasks in number, algebra, shape, and data handling emerged from a collaborative project run by Jon Stratford, Lead Practitioner for the Specialist Schools and Academies Trust (SSAT): arrangements, clock face, chocolate dilemma, ...more>>

  25. Rich Starting Points for A-Level Core Mathematics - Jonny Griffiths
    Download PDF task files of 40 open-ended investigative activities for the A Level Pure Mathematics classroom: basic algebra, coordinate geometry, polynomials, curve sketching, uncertainty and inequalities, indices and surds, sequences and series, differentiation, ...more>>

  26. Robert Kaplinsky - Glenrock Consulting - Robert Kaplinsky
    Lessons consist of "The Challenge(s)," "Question(s) To Ask," "Consider This," and alignments to Common Core State Standards (CCSS): "How Can We Water All Of The Grass?" and "How Much Money Should Dr. Evil Demand?" and "How Did They Make Ms. Pac-Man?" ...more>>

  27. 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 ...more>>

  28. Seedbed - Tom O'Brien, ed.
    Throughout the 1980s, Seedbed published articles on "the intellectual growth of children, and teachers' participation therein." Editor Tom O'Brien described the publication as a practical one, "where teachers are the principal authors and where teachers' ...more>>

  29. 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?" ...more>>

  30. 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," ...more>>

  31. Stella's Stunners - Rudd Crawford
    More than 600 non-routine mathematics problems named in honor of the Dutch baroness Ecaterina Elizabeth van Heemsvloet tot Schattenberg. Each collection in the Stella Library contains five subsets, one for each course of Pre-Algebra, Algebra I, Geometry, ...more>>

  32. 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 ...more>>

  33. Suffolkmaths.co.uk - Mark Greenaway
    Greenaway hosts a select collection of third-party resources in the public domain, many drawn from the UK's Department for Education (DfEs): teaching materials for Great Britain's different grade levels; problem solving documents on problem-solving strategies, ...more>>

  34. Supporting Sense-Making and Perseverance - Suzanne Alejandre
    Article about how the Math Forum's noticing and wondering not only values each learner, it "also works to engage all learners in finding their mathematical voice." Originally published in the March, 2013, issue of the CMC ComMuniCator, journal of the ...more>>

  35. TagMath - Cody Taggart
    Blog by a Wisconsinite now teaching at the United Nations International School in Hanoi (Vietnam). Weekly updates, 48-hour challenges, and other posts addressed to Taggart's students date back to February, 2012; and have included "Dublox," "Reviewing ...more>>

  36. teaching/math/culture - Ilana Horn
    Blog by a professor in Vanderbilt University's Teaching and Learning Department "interested in broadening our notions of mathematical competence. What do classrooms look like that are inclusive and incorporate rich mathematics?" Posts, which date back ...more>>

  37. Teaching Resources: Mathematics - McGraw-Hill School Division
    Activities and lesson plans for grades 1-6, linked to McGraw-Hill's program Math in my World; also MathTalk - conversations about key issues and teaching strategies (e.g. cultural diversity; manipulatives; technology; problem solving); and "Ask CyberScout!" ...more>>

  38. Teaching to the Beat of a Different Drummer - Brian Stockus
    Blog by a lead curriculum specialist for elementary mathematics in Texas who taught elementary school and led content developers in the design of digital math lessons. Posts, which date back to August, 2012, have included "To question, how to question, ...more>>

  39. TeachingWorks
    Establishing a "professional system for the training of teachers" through "a common curriculum for professional training that focuses on high-leverage practices and on the subject-matter knowledge needed for teaching; performance assessments of teachers' ...more>>

  40. TheGeometryTeacher - Andrew Shauver
    Shauver, who teaches at a Michigan public high school in a one-to-one laptop program, blogs to "describe his own independent learning and to re-inspire the natural curiosity sometimes absent from the typical high school classroom." Posts, which date back ...more>>

  41. Theron J. Hitchman
    Scholarship and teaching by a professor of mathematics at the University of Northern Iowa. Hitchman's research focuses on differential and metric geometry, dynamical systems, and Lie theory, with particular interest in discrete subgroups of semisimple ...more>>

  42. 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"; ...more>>

  43. 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 ...more>>

  44. Tools for Understanding - John Woodward; University of Puget Sound
    A resource guide for extending mathematical understanding in secondary schools, for educators who teach mathematics and are interested in integrating common technologies into their daily instruction. Onsite strands (Math Concepts with lessons related ...more>>

  45. Topics in Arithmetic and Elementary Mathematics - E. Lee Lady; University of Hawaii
    Materials used in a university course for prospective elementary school teachers, to teach them how to be interested in mathematics. Materials are in PDF and DVI, and include: representing numbers in other bases, divisibility tests, periodic decimal expansions, ...more>>

  46. Traditionalist Becoming Non-Traditional - 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 K-8 Math Ed from the UGA campus in Griffin my math world was really shaken ...more>>

  47. UBUYACAR - Maricopa Center for Learning and Instruction
    An online problem-based learning manual for students that poses the question: "You are interested in purchasing a new vehicle. What should your annual salary be to afford the car you want?" Students move through a problem-solving process. A Tutor's Manual ...more>>

  48. Under the Dome - Mike Wiernicki
    Blog by a math coach and a consultant for Learner's Advantage. Posts, which date back to October, 2013, have included "A Number Talks Reflection — A Look Back Over the Past 3 Years ...," "Relevant Decimals Lesson," "The Penny Cube," and "Are Your ...more>>

  49. Unsilence Students' Voices - Suzanne Alejandre
    Article discussing how to provide an opportunity for all students to contribute to math classroom discussions. Originally published in the September, 2012, issue of the CMC ComMuniCator, journal of the California Mathematics Council, this article intersperses ...more>>

  50. Valuing as the Key to Unsilencing - Suzanne Alejandre
    "At the heart of the Common Core State Standards (CCSS) Initiative is the valued learner, a learner with an active voice in his/her own learning. Under No Child Left Behind (NCLB) practices and assessment many students' voices have fallen silent.... Valuing ...more>>

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