National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Compound Inequalities
"Dr. Math" provides a visual (graphical) approach to solving compound inequalities as opposed to an approach dependent upon algebraic manipulation.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Compound Inequalities
Find a quick, concise explanation of Compound Inequalities. An example is given and clearly explained for an "or" type and an "and" type of compound inequality.