Amby Duncan-Carr
Amby: Order of Operations
Amby's Resources site is a tutorial that explains order of operations. It explains in both text and video form. In addition, there is a pretest.
Math Medics
S.o.s. Math: Order of Operations
This lesson contains four rules on order of operations and several examples of each. It also allows you to work out practice problems.
Washington State University
Washington State University: Order of Operations
Washington State University provides a short lesson concerning which operations to execute first in solving an equation. The site provides the answers with an example.
Other
Highline Advanced Math: Order of Operations
This site from the Highline Advanced Math Program shows you how to use the order of operations in order to solve an equation.
Other
Order of Operations Is the Grammar of Mathematics
Sentences and phrases can be formed to help you remember the order of operations.