From obeymath.org

Main: Links

Dawson College:

• Dawson Mathematics homepage: http://www.dawsoncollege.qc.ca/departments/preu/math/
• Dawson College: http://www.dawsoncollege.qc.ca

Extra Curricular:

• Mathematical Excursions: http://www.math.mcgill.ca/jakobson/mathexcursions.html

Online Mathematics Community:

• Planemath: http://www.planetmath.org
• Ask Dr. Math: http://mathforum.org/dr.math/

Solvers:

• Sage Math Cell: https://sagecell.sagemath.org/
• The Sage Notebook: http://www.sagenb.org/
• Simplex Method Tool: http://www.zweigmedia.com/RealWorld/simplex.html