MINI #14 - NUMBER SENSE/RIDDLES WITH REMAINDERS AND PERFECT SQUARES Algebraic Expressions and Equations Number Theory Video by Art of Problem Solving's Richard Rusczyk.
MINI #73 - EVEN MORE THAN ONE WAY TO SOLVE A PROBLEM Algebraic Expressions and Equations Problem Solving (Misc.) Video by Art of Problem Solving's Richard Rusczyk.
MINI #86 - NON-STANDARD OPERATORS IN ALGEBRAIC EXPRESSIONS Algebraic Expressions and Equations Video by Art of Problem Solving's Richard Rusczyk.
MINI #94 - MAKE A SKETCH Algebraic Expressions and Equations Plane Geometry Problem Solving (Misc.) Video by Art of Problem Solving's Richard Rusczyk.