 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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 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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 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 Worksheets Land
Thousands of downloadable math worksheets, aligned to the Common Core State Standards (CCSS) and with solutions, by a retired teacher: addition, algebra, area and perimeter, basic operations, complex numbers, counting, decimals, division, estimation,
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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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 Money as You Learn  United States Department of Treasury
Lessons, activities, and other teacher tools to integrate personal finance into the teaching of the Common Core State Standards (CCSS) in Mathematics. "Personal finance big ideas" include cost/benefit analysis, delayed gratification, inflation, opportunity
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 NBA Math Hoops  Big Picture Learning
A card game that leverages the influence that National Basketball Association (NBA) and Women's National Basketball Association (WNBA) stars have on American youth. Gameplay simulates a regulation basketball game, with pairs of students racing against
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 The Number Warrior  Jason Dyer
Blog by an algebra and calculus teacher. Posts, which date back to January, 2008, have included "The Educational Problem with Teaching Multiplication as Repeated Addition," "Nonlinear lesson design (Giant Ants of Doom)," "The design of mathematical notation,"
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 Open Middle  Johnson, Nanette; and Kaplinsky, Robert
"Open middle" problems, hints, and answers, all aligned to the Common Core State Standards (CCSS). Introduced by Dan Meyer, these kinds of math challenges have a "closed beginning," meaning that they all start with the same initial problem; a "closed
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 Open Up Resources
Makers of a problembased math curriculum authored in collaboration with Illustrative Mathematics. Begun as as the stateled K12 OER Collaborative, the nonprofit Open Up Resources develops openlylicensed content available to districts via nocost licenses.
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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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 Quanta Magazine  Simons Foundation
Devoted to mathematics and basic science news through public service journalism. See, in particular, Quanta's series subtitled "Experiments in Education"; its column "Quantized," in which researchers explore the process of discovery; and all of its math
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 Questioning My Metacognition  Graham Fletcher
Blog by a K5 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,"
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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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 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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 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. PacMan?"
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 Shooloo  Shooloo Inc.
At Shooloo, students "discover the joy of writing their own math stories" by publishing original word problems, constructing viable arguments, critiquing the reasoning of others, and modeling real life with mathematics. Shooloo then presents the resulting
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 Splash Math  StudyPad, Inc.
Free adaptive, interactive worksheets and games of math problems for grades 15. Aligned to the Common Core Standards (CCSS), these apps for the iPhone and iPad also email weekly progress reports that highlight strengths and weaknesss. Also available
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 SR Education Associates, LLC  Steven Rasmussen
Consulting services in educational publishing, mathematics curriculum development, educational technology design and development, educational marketing, professional development for mathematics teachers, advocacy for mathematics and STEM education, and
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 SsgtMath  Ricardo Sinclair
Ten to fifteen minutelong whiteboard introductions to Common Core State Standards (CCSS) ideas, geometry constructions, proofs, precollege algebra, college algebra, and more.
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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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 Supporting ELLs in Mathematics  Stanford University
Materials that illustrate how Common Corealigned math tasks can support math instruction and language development for English Language Learners (ELLs) in elementary, middle, and high school. Learn about the development of this material from Stanford
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 Supporting SenseMaking 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
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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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 Talking Math Ed with the Males  Josh and Lorraine Males
This blog "dedicated to all things math ed" includes lesson ideas, policies, curriculum, and research. Posts "for people to have a conversation about mathematics education," which date back to August, 2011, have included "CCSS from the Curriculum Writers
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 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
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 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,
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 Think Through Math  Imagine Learning Inc.
Adaptive, differentiated curriculum to prepare students in third grade math through Algebra I classes prepare for the Common Core State Standards (CCSS). Watch Think Through Math (TTM) videos, request a demo, and more.
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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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 Tools for the Common Core Standards  Bill McCallum
News about tools that support implementation of the Common Core State Standards (CCSS). Posts, which date back to January, 2011, have included "Draft of progression on Number and Operations in Base Ten," "Task Writing Contest 5 for Illustrative Mathematics,"
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 TurnOnCCMath.net  Confrey, Jere, et al.
Learning trajectories that unpack the K8 Common Core State Standards (CCSSS) for Mathematics from the standpoint of student learning, and elaborate the underlying scientific research in mathematics education. Click on a hexagon or a trajectory for detailed
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 UnboundEd
Providers of free standardsaligned resources for the classroom, institutes for immersive training, and more. See, in particular, UnboundEd's math lessons; curricula for grades PreK12 math; and math teaching guides, videos, podcasts, and other professional
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 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
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 WatsonMath.com  Elaine Watson
A repository for ideas and links that support Watson's work as a K12 mathematics consultant, such as spreading the word about the Common Core State Standards in Mathematics and how they can be implemented by classroom teachers. Posts, which date back
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 West Contra Costa Unified School District Mathematics Center  Kennedy High School
Common Core mathematics resources, presentations, instructional videos, lessons, mathematics applets, parent guides, and other materials developed by the Richmond (California) school district.
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