Khan Academy: Basic Set Operations: Intersection and Union of Sets

A video of basic set and subsets operations.

Checks understanding of the union, complement, and intersection of sets. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

A video showing working with sets.

An introduction of Universal Sets and Absolute Complement.

Adding and subtracting matrices.

Sal moves onto more challenging set ideas and notation like the universal set and absolute complement.

This video follows from Khan Academy: Sequences and Series (Part 1) and furthers the idea of the basic geometric series. Explains how to find the sum of both a finite and an infinite geometric series. Uses limits to find the sum of an...

A test prep practice question on basic set notation.

Now we can combine split and average into a single operation called subdivide.

This video explains in which number sets in the real number system a specific repeating decimal belongs.