Curated OER
Matrices
Students explore matrices. Given a particular situation, they discover the make-up and design of a matrix. Students identify examples of rectangular arrays used in real world situations. They solve oral problems in class.
Other
A Very Gentle Introduction to Matrices
Excellent tutorial site on the basics of matrix operations. The site has definitions and examples
Khan Academy
Khan Academy: Intro to Zero Matrices
Explains what a zero matrix is, shows examples, and provides some interactive practice exercises. Help is available for exercises if it is needed. A summary chart compares the number zero to the zero matrix.
Wolfram Research
Wolfram Math World: Zero Matrix
This site from MathWorld.com briefly explains what a zero matrix is and contains links to related topics.
Other
Special Matrices
Excellent site with definitions and examples of numerous special matrices including the zero matrix.