Resources

Mathematics

Math Forum: Ask Dr. Math
Wolfram: Math World, WolframAlpha
Project Euler
Cut-the-Knot
Potent problems organized by NCTM standard
MathsChallenge.net
Encyclopedia of Integer Sequences
NRICH
Web Sketchpad activities
Whiteboard.fi
Plotting secret messages

Teaching

Activities & lessons

NCTM Illuminations – lessons usually focus on web applets
PBS Teachers
RealWorldMath

Assessment

Data

NCES -- national center for educational statistics
QELP -- quantitative environment learning project

Videos

Calculus in 20 minutes
Creativity in education (Robinson, 2006)
Flow (Csikszentmihalyi, 2008)
Last lecture: Achieving your childhood dreams (Pauch, 2007)
The surprising science of motivation (Pink, 2009)

Video lessons

Kahn Academy -- math skills
Learner.org

Professional organizations

Other

Math Mistakes - faulty student work
Mathematical Proficiency (Adding It Up, 2001)
Manipulatives:
Early Mathematics Placement Tool
My educational notes/ideas
How people learn: Mathematics (Bransford)

Engagement

Linear war (Golden)
24 game - computation, order of operations
Arithmagons - computation and algebra
Games for Science - fractions, algebra
- Refraction - fractions
Kakooma - computation (better for students to create their own)
KenKen - logical deduction and computation (also NYTimes)
Sudoku - logical deduction
Area Maze - geometry area problems, fractions/decimals are discouraged
Kakuro - like Sudoku, but with math operations
Shikaku - make rectangles for pre-determined areas, good for working on number factors
Bingo Baker - create digital bingo cards
Terraforming Mars