Khan Academy: Order of Operations: Introduction to Order of Operations

The topic of trigonometric ratios is often covered with loads of rote memorization baked into the activity. This activity set, however, leans more on using similar triangles and discovery learning to help young geometers develop a deeper...

First, by demonstrating the improper ways of solving an equation (left-to-right, multiplication first), Sal shows viewers how the answer to an equation can be drastically incorrect if the order of operations is neglected. He uses several...

PEMDAS is not all that it is cracked up to be. The short video provides an argument that the order of operations may not be instructionally sound. The presentation shows that understanding the concepts and properties of mathematics...

A video lesson introducing conic sections. Includes a sketch of each of the four fundamental conic sections in two dimensions. Also explains why they are called conic sections by illustrating how each is the intersection of a cone and a...

This video demonstrates the order of operations in a numerical expression.

This video explains the order of operations with exponents and negative numbers.

This video explores more advanced order of operations problems in numerical expressions.

It's the classic please excuse my dear aunt sally strategy to remembering the order of operations. Young mathematicians practice to develop an understanding of the order of operations. Examples and practice problems include...

A video introducing matrices.

That old math tutor from is back and he is here to introduce the concept of algebra. This clip is actually quite clear and informative. Variables, constants, and algebra are defined along side solid examples. This clip would be good for...