- AIM Open Textbook Initiative"Open-source math textbooks that have been judged to meet the evaluation criteria set by the American Institute of Mathematics editorial board." -- RCL
- Book of ProofBy Richard Hammack, professor of mathematics at Virginia Commonwealth University in Richmond. This is an introduction to the standard proof methods of mathematics.
- GeoGebraInteractive geometry, algebra, statistics, and calculus software
- PurplemathA commercial website by Elizabeth Stapel

- Mathematics Content for Elementary Teachers byCall Number: E-bookISBN: 9780805842470Publication Date: 2004-08-06
- Schaum's Outline of Review of Elementary MathematicsCall Number: E-bookISBN: 9780070522794Publication Date: 1997
- Knowing and Teaching Elementary Mathematics byCall Number: E-bookISBN: 9780805829082Publication Date: 1999-05-01EBSCO ; 2 user license.

- Pumpkin 'Pi' Carving Patternc2013 Stoneykins.com
- Circles and Pi (Streaming Media)Annenberg Media
- Pi DayExploratorium, the museum of science, art and human perception
- Visualizing Picommercial site

- Missouri Collegiate Mathematics CompetitionMathematical Association of America. Missouri Section.
- Missouri Collegiate Mathematics Competition ArchivesMathematical Association of America. Missouri Section
- SBU Math ContestsThe SBU Department of Mathematics hosts an annual math contest for elementary and middle school students. While this is an independent event, the tests used are written by MathLeague and Missouri students can qualify for the next level of MCTM competition based on their performance at the SBU Math Contest.

- American Mathematics CompetitionsMathematical Association of America
- The Math LeagueMath League
- COMAP's Mathematical Contest in ModelingConsortium for Mathematics and Its Applications
- Undergraduate Statistics Project Competition and Electronic Undergraduate Statistics Research ConferenceThe Consortium for the Advancement of Undergraduate Statistics Education (CAUSE) and the American Statistical Association
- William Lowell Putnam Mathematical CompetitionThe William Lowell Putnam Mathematical Competition is administered by The Mathematical Association of America
- Competitions - Kaggle.com"Kaggle is an online community of data scientists and machine learners, owned by Google LLC. Kaggle allows users to find and publish data sets, explore and build models in a web-based data-science environment, work with other data scientists and machine learning engineers, and enter competitions to solve data science challenges. Kaggle got its start by offering machine learning competitions and now also offers a public data platform, a cloud-based workbench for data science, and short form AI education. " -- Wikipedia, viewed 6/11/2019

- AMSER (the Applied Math and Science Education Repository)From the website: "AMSER (the Applied Math and Science Education Repository) is a portal of educational resources and services built specifically for use by those in Community and Technical Colleges but free for anyone to use. AMSER is funded by the National Science Foundation (NSF) as part of the National Science Digital Library." Registration required
- Martindale's Calculators On-Line CenterIncludes links to calculators, applets, spreadsheets, courses, manuals, simulations, animations and videos.
- MERLOTMERLOT is a free and open online community of resources designed primarily for faculty, staff and students of higher education from around the world to share their learning materials and pedagogy.
- NIST Digital Library of Mathematical FunctionsA companion to the NIST (National Institute of Standards and Technology) Handbook of Mathematical Functions
- Paul's Online Math NotesThis site and the notes contained in this site were written with the intent of providing students and instructors with a free set of notes that they could use for their classes. The author of this site is Paul Dawkins, math professor at Lamar University.
- Saving.orgFinancial education tools and games
- Smart SkiesA NASA Ames Research Center elementary mathematics web resource
- Wolfram MathWorldThis site advertises itself as the most extensive mathematics resource on the web. A free resource from Wolfram Research, created by Eric Weisstein.
- Trends in International Mathematics and Science Study (TIMSS)An Institute of Education Sciences resource

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- Beyond Formulas in Mathematics and Teaching : Dynamics of the High School Algebra ClassroomCall Number: E-bookISBN: 9780807739181Publication Date: 2000
- High School Mathematics at Work byCall Number: E-bookISBN: 9780309063531Publication Date: 1998-06-27