Links

Math Links

Related Math Education Organizations:

National Council of Teachers of Mathematics (NCTM) is the world’s largest mathematics education organization, with 80,000 members. OCTM is an NCTM Affiliate, as is the Washington State Mathematics Council.
NCTM Illuminations has resources for teaching and learning mathematics for grades pre-K—12, including lessons and interactive tools searchable by NCTM’s Principles and Standards and by the Common Core State Standards.
Principles to Actions, NCTM’s landmark publication, describes specific, research-based teaching practices and core principals that are essential for a high-quality mathematics education for all students.
The Math Forum, which became part of NCTM in 2015, provides resources, materials, activities, person-to-person interactions, and educational products and services to support K-12 math education.
The National Council of Supervisors of Mathematics (NCSM) is a mathematics leadership organization for educational leaders that provides professional learning opportunities necessary to support and sustain improved student achievement.
Oregon Mathematics Education Council (OMEC) is the kindergarten through college mathematics advisory board for the state of Oregon.

Oregon Department of Education and Oregon STEM hub links:

Sources for math curriculum and lessons:

OpenCurriculum Common Core Mathematics Library provides links to K-12 open-source content from a variety of providers, searchable by grade and Common Core standard.
Illustrative Mathematics provides K=12 instructional and assessment tasks, lesson plans, and other resources organized by Common Core standards and progressions.

The Mathematics Assessment Project provides classroom lessons, summative assessments, and professional development, for grades 6-12 with the goal of helping teachers "bring the Common Core State Standards (CCSSM) to life."
Inside Mathematics has K-12 lessons, problems, and assessment tasks.
CCSS Math Activities is a site by teacher-consultants which includes a well-organized collection of free Common Core math curriculum and activities, performance tasks, and test preparation resources, especially for K-8 grades.
K-5 Math Teaching Resources has a Common-Core-aligned collection of free resources, math games, and hands-on math activities.
SMILE Program Mathematics Index (200 lessons)
Mathalicious 6-12 lessons explore the math behind real-world topics. (Most Mathalicious lessons require a paid subscription; this link points to the free ones.)

Math puzzles and problems:

Chuck Peterson's Problem Solving Page has problems for all levels, sorted by suggested solving strategies.
AIMS Puzzle Corner
NRICH is a British site with problems for students of all K-12 grades, especially involving numbers, logic, or geometry. (Their “primary” is our elementary.)
Visual Patterns and SolveMe Puzzles both build and support algebraic thinking with interesting puzzles.
Open Middle has problems with multiple solution paths (often optimization problems), sorted by grade and Common Core standard area.
Which One Doesn’t Belong?
Estimation180 helps students improve number sense and problem solving skills.
Brilliant has a variety of math and science problems of different levels (probably best for high school), some free.
Mathematical Association of America Curriculum Inspirations has challenging problems for middle school level and up, along with teacher guides to promote problem solving.
YouCubed Tasks and Week of Inspirational Math provide number sense, pattern recognition, and other problems designed to be solvable with a variety of methods by students of a wide range of ages.
1001 Math Problems has charming puzzles that prompt deep mathematical thinking without generally requiring much specialized content knowledge.

Online technology tools for math:

Desmos is a free graphing calculator (and activity building site) available through web browsers or as an app. Oregon state math assessments will use Desmos starting with the 2016=17 school year.
Good Calculators also has a graphing calculator.
WolframAlpha is a free “computational knowledge engine."
GeoGebra mathematics software handles functions, geometry, algebra, calculus, statistics, and 3-D math.

Online test questions and test preparation:

Smarter Balanced Assessment Consortium page
National Assessment of Educational Progress (NAEP) Questions Tool (grades 4, 8, and 12)
New York State Testing Page: Sample Test Questions (grades 3-12)

Other sources of professional development material and research related to math education:

TurnOnCCMath shows Common Core learning progressions as linked hexagons for different grade levels and strands.
Annenberg Learner provides professional development and multimedia resources for teachers in multiple content areas, including mathematics.
Internet 4 Classrooms lists free online resources to use in classroom instruction, developing project ideas, reinforcing specific subject matter areas, and for technology tutorials related to online assessment.
Academic Earth list of free online lectures and courses for mathematics
Education Northwest (formerly Northwest Regional Educational Laboratory)
Math Learning Center
Jackie Cooke's OCTM Core Standards Resources (including Number Clubs from OSU STEPS program)

Jackie Cooke's List of Kid-Friendly Websites