The internet is a wonderful resource for information related to teaching m
athematics. The level of information provided varies over all grades K-12, 
through college or university, and beyond. There are sites that present 
topics in mathematics, pedagogical issues and questions, lesson plans, and 
software reviews. The sites listed below have been selected for their depth 
of coverage, clear and concise format, and the usefulness of the links 
provided by the site. The list has been kept small on purpose but should offer 
you a good starting point in your search for information on teaching mathematics.

Comprehensive Sites for All grades, K-12
Sites Primarily for Elementary Grades, K-6
Sites Primarily for Middle School and High School, Grades 6-12
Books/Manipulatives in K-12 Mathematics

Comprehensive Sites for All grades, K-12

  Shodor: interactive activities and instruction materials. 
  The Math Forum is an excellent site for all grade levels.  
  Convergence a new magazine of the MAA, "where mathematics, history  and teaching interact".
  UtahLink provides information for teachers on classroom materials, lesson plans,  the Utah State Core 
      Curriculum, professional development opportunities as well as links to individual school web pages.
  The MacTutor History of Mathematics Archive is one of the best collections on the history of mathematics.  
  Math Archives offers information on topics in mathematics as well as a database of teaching 
      materials and software.
  NASA Internet Educational Resources
  MathMol is a large and well-organized site with on-line lessons and tutorials on topics illustrating 
      applications of mathematics in the areas of biology, chemistry, and physics.
  The Gateway provides a large searchable collection of 
      mathematics materials.
  The Curriculum Resources at the Utah State Office of Education.
  PBS MATHLINE
  The Eisenhower National Clearinghouse for Mathematics and Science Education is a large searchable 
      database for resources, lesson plans, discussions on teaching Mathematics.
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  MegaMath is a project intended to bring unusual and exciting mathematical ideas to elementary school 
      classrooms so that young people and their teachers can think about them together. Both mathematical 
      background and lessons plans are provided.
  Teaching Children Mathematics 
  Proteacher is a teacher-created web directory that maintains discussion boards for the community of 
      elementary educators in grades K-8. 
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  Mathematics Teaching in the Middle School is an official journal of the NCTM intended as a resource 
      for middle school students, teachers, and teacher educators. 
  The Mathematics Teacher The journal's focus is the improvement of mathematics instruction in 
      grade 8 through two-year and teacher-education colleges. 
  The Prime Pages is a wonderful site for information about prime numbers.
  Sieve of Eratosthenes, Prime Machine, Platonic Solids are some of the interesting applets along with 
      useful background information on each of these topics on this site developed by Peter Alfeld, 
      Mathematics Department, University of Utah. There is also a nice study guide for students, 
  Understanding Mathematics
  CHANCE is a wonderful site for anyone teaching statistics and probability. 
  The Geometry of the Sphere is a site which examines the geometry of a sphere in contrast to 
      plane geometry. 
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  Dale Seymour Publications (K-12)
  Creative Publications (K-8)
  Summit Learning (K-12)
  Math Learning Center (K-9)
  ETA/Cuisenaire: Expanding the Universe of Learning (K-12)
  Tessallations: Creative Combinations of Math, Art, and Fun (K-12)
  Key Curriculum Press (9-12)
  e-Nasco Online Catalogues (K-12)
  Sunburst Technology (K-12)
  Geogebra is a freeware useful for teaching algebra, geometry and calculus. The site has Wiki pages with 
      lesson plans and other ideas. 
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