 achievethecore.org  Student Achievement Partners
Professional development modules, voices of teachers, articles, tools, research, and other free resources for educators implementing the Common Core State Standards, as assembled by the American Federation of Teachers (AFT), the National Education Association
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 Aha!Math  Learning.com
This K5 curriculum package, aligned to state and Common Core standards, supports differentiated instruction with multiple instructional models. Aha!Math provides students with immediate feedback in interactive story settings. Freely sample games and
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 Algebra 4 All
A community of educators sharing resources and supporting one another in the practice of teaching algebra: lesson sharing, applets for students and teachers, discussion forum, blogs, media, and other content related to the functionsbased approach to
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 Algebra Nation  The University of Florida Lastinger Center
Free help for Florida students preparing to take the state's computerbased Algebra EndofCourse (EOC) Exam. Each video content review session includes two clips — one, taught by a male; the other, taught by a female — encourages students
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 Angela Andrews  District 86
Files shared during a Common Core State Standards (CCSS) Mathematics workshop by Andrews, host of the DuPage Children's Museum's Aunty Math site: Comparing Ordering Sequencing and Rounding, Dangers of Touch Math, Emergent Learner Activities, Experiences
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 b's law  Brian Lawler
Blog begun March, 2011, by a professor of math education at California State University San Marcos. Posts, which "try to disrupt," have included "continued reaction to tracking," "The Problem of the Skateboarder Problem in IMP," "A Deconstruction of Learning
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 CCSSI Mathematics
This blog takes "a critical look at the common core state standards in mathematics." Posts, which date back to April, 2012, have included "The concept of none" and "Does a kindergartner need to know what a hexagon is?"
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 Common Core Algebra II Statistics and Probability  Maryland Public Television
Modules of lessons enlivened by computer animations, journal prompts, interactive "check your understanding" selfassessments, and more: linear, quadratic and exponential regression; regression; standard deviation; inferences; probabilities of compound
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 Common Core Math  New Jersey Center for Teaching & Learning
Freely downloadable teacherdesigned units consisting of one to two hundred Interactive White Board (IWB) presentation slides: each of grades K8, PreAlgebra (available in Spanish), Algebra I (available in Spanish) and II, Geometry, PreCalculus, AP
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 Common Core Online  Darren Burris
Articles on Common Core State Standards (CCSS) mathematics, dating back to December, 2011, as "scooped," or digitally curated, by a Boston, MA, teacher.
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 #commoncore Project  Supovitz, Jonathan; Daly, Alan J.; and del Fresno, Miguel
How are social mediaenabled social networks changing the discourse in American politics that produces and sustains social policy? This interactive website examines the Common Core State Standards (CCSS) debate through the lens of Twitter and the #commoncore
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 Common Core Ratios and Proportions Wiki for Sixth Grade  Mary Dooms
Instructional videos, manipulatives, samples of levels of mastery, and other resources on ratios and proportions. See also Dooms' Common Core State Standards (CCSS) wiki for sixth grade geometry.
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 Contexts for Learning Mathematics  Catherine Fosnot
Heinemann's supplemental series uses "carefully crafted contexts" and mathematical "situations" as starting points to support learning through investigations.
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 Crazy Math Teacher Lady  Lisa Bejarano
A high school math teacher in Colorado, Bejarano began blogging after "an awesome 3 day experience at NCTM Denver." Original classroom materials by herself and her students regularly enrich her posts, which date back to that April, 2013 annual meeting
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 DapJ Music
Rap music for adolescents struggling to learn and retain math concepts: "Fractions Are Division Problems"; "Keep, Change, Change"; "Properties"; "First, Outer, Inner Last"; and more. The educationally based music production company provides Common Core
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 Data Games  KCP Technologies
As students play Data Games, they generate data that they must analyze to win the games. Supporting materials include a student worksheet; teacher guidelines that correlate the activity to the Common Core State Standards for Mathematics (CCSSM); and videos
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 Do Your Home Work Arizona  Stand for Children Arizona
A free tool for Arizonan parents to better understand the homework assigned to their children. Use the pulldown menus to select math and a grade K8, or search with a keyword, for outlines of math content standards, homework help resources, and access
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 Dynamic Number  KCP Technologies, Inc.
Classroomready activities of The Geometer's Sketchpad® for interacting with mathematical objects to develop deep understanding of number and early algebra concepts. Some of this content received support from the National Science Foundation (NSF)
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 Easing the Hurry Syndrome  Jennifer Wilson
Blog by a teacher in Flowood (Mississippi) whose course load includes Advanced Placement Calculus and Geometry. Posts often begin with alignments to relevant Common Core State Standard (CCSS) and feature screenshots of TINspire CAS Navigators, with original
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 educating grace
A blog about mathematical thinking, teaching students to think, thinking about teaching students, and ending educational inequity, especially in math. The posts by this former high school math teacher who now develops teacher training date back to August,
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 Elevated Math  Elevated Lab Press
Instructional math videos, aligned to the Common Core State Standards (CCSS), enlivened with multiple voices as well as graphic and cartoon animation. This iPad app, which includes a whiteboard for working out math problems, comes with two lessons and
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 Five Twelve Thirteen  Dylan Kane
Blog by an eighth grade math teacher in Boston. Posts, which date back to October, 2012, have included "Assessment & Rigor," "Pythagorean Triples Function," "Construct Viable Arguments and Critique the Reasoning of Others," "Guatemalan Sinkhole," "Problem
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 Focus on Student Practice  Suzanne Alejandre
Article about how students worked on the Problem of the Week (PoW) "Wooden Legs" in a way that developed the Common Core State Standards (CCSS) Mathematical Practice of "making sense of problems and persevering in solving them." This article, originally
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 Geometric Functions  Scott Steketee
Activities to develop function concepts with the "compelling kinesthetic experiences and opportunities for explicit discourse" available through geometric transformations (reflections, rotations, translations). Geometric Functions resources fulfill the
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 Graphite  Common Sense Media Inc.
This free service from nonprofit Common Sense Education helps preK12 educators "discover, use, and share the best apps, games, websites, and digital curricula for their students by providing unbiased, rigorous ratings and practical insights." Built by
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 HCPSS Family Mathematics Support Center  Howard County Public Schools
K12 math lessons, activities, enrichment tasks, vocabulary lists, and more, organized by grade level and academic quarter. Designed for parent and students, the Maryland school district collected these resources from third parties such as LearnZillion,
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 The Ignite Show  Georgia Public Broadcasting
TV shows and blog that "raise respect and awareness of educators and education through the voices of teachers, parents and students" in studentcentered classrooms. Half hourlong videos that feature math teachers include episodes starring 2008 California
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 The Illustrative Mathematics Project
Providing guidance to states, assessment consortia, testing companies, and curriculum developers by illustrating the range and types of mathematical work that students will experience with the Common Core State Standards, and by publishing other tools
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 IMPS  Education Development Center, Inc.
Illustrations that model implementation of the Common Core State Standards (CCSS) for Mathematical Practice (MPs) and connect them to the content standards. Centered on student dialogues, each of EDC's eight Implementing the Mathematical Practice Standards
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 Institute for Mathematics and Education  The Arizona Board of Regents
The Institute for Mathematics and Education (IM&E) supports local, national, and international projects in mathematics education that "focus on both the mathematics and the students, can be applied to current needs, build on existing knowledge, and are
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 I Support the Common Core  McCallum, Bill; and Zimba, Jason
Blog "for people who want to be active in support of the Common Core State Standards" (CCSS). Posts, which date back to August, 2013, have included "Cathy Kessel critiques the critiques," "A mathematician on the rigor of the Common Core," "The Coming
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 Kansas Association of Teachers of Mathematics
Bulletins, advocacy, resources, and more from the Kansas Association of Teachers of Mathematics (KATM). See, in particular, KATM's FlipBooks of of research, "unpacked" Common Core State Standards (CCSS) from many states, instructional strategies, and
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 LearnBop  LearnBop INC.
Oneonone online tutoring for students; infographic progress reports for their teachers and parents. See, in particular, LearnBop's autoscoring playlists of algebra and other math problems, which offer "ask for help" buttons and stepbystep guidance.
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 LearnZillion
A free learning platform that combines screencast video lessons, lesson commentaries, assessments, and progress reporting. Explore lessons by Common Core State Standard (CCSS) in math.
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 Lesson Plans  Chicago Lesson Study Group
This Lesson Plan Library organizes dozens of math lessons and units for grades 39, all aligned to the Common Core Standards. The Chicago Lesson Study Group invites teachers to rate and comment on these resources; and to join its forum to learn about,
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 The Map is Not the Territory  Malke Rosenfeld
Blog by a traditional percussive dancer (Appalachian style flatfooting and clogging and Canadian step dancing) who "teaches the math that directly relates to the process of making rhythm and patterns with the feet." Posts about the mathematics of percussive
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 Mathalicious  Karim Ani
Relevant and engaging modular math lessons designed around realworld topics that students care about. Search the lessons by keyword; browse them by Common Core State Standards (CCSS), grade levels, topics, and themes: design, entertainment, health and
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 mathblag  David Radcliffe
"Musings on math and teaching" by a math instructor at a community college in Minnesota. Posts, which date back to December, 2010, have included "Counting with Integrals," "The Euclidean algorithm and modular inverses," "A property of the divisors of
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 Math Dept Home Page of W. Stephen Wilson  W. Stephen Wilson
Education activities and publications by Wilson, formerly a Senior Advisor for Mathematics in the Office of Elementary and Secondary Education at the United States Department of Education: presentation at the 2008 Leading Minds K12 Math Education Forum;
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 Mathematics by Mr. P  Mike Poliquin
Middle school math teacher Poliquin began this blog, subtitled "making sure everyone gets it," in December, 2011. Posts have included various original problems of the week; "Eudoxus of Cnidus: the First Mathematical Superstar"; "A Quick Dip in the Deep
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 The Mathematics Common Core Coalition
The Mathematics Common Core Coalition (CCC) works to provide expertise and advice on issues related to the effective implementation of the Common Core State Standards for School Mathematics (CCSSM). The coalition provides a means to review, research,
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 The Mathematics Teacher Education Partnership  Association of Public and Landgrant Universities (APLU)
The Mathematics Teacher Education Partnership (MTEP) seeks to significantly increase the effectiveness of secondary mathematics teacher candidates, to ensure that candidates can promote mathematical excellence in their future students, leading to college
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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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 The Math Lab @ Room 27  Matt Jones
Subtitled "It doesn't HAVE to be boring ...," this blog dates back to March, 2014. Posts have included "March Math Madness, New Additions to the Room, and Another Quote"; "Common Core Backlash"; "The Best Laid Plans..., 'Real World' Math, and 3rd Grade
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 Math Misery?  Manan Shah
Blog that "aims to convey the general feeling that the majority of people have when it comes to working with mathematics... and bring awareness about what mathematics is and what mathematicians do." Posts, which date back to May, 2013, have included "Figuring
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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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 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
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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