# Set Notation & Set Operations

Videos are also on YouTube and will be embeded “soon”.

**set**is a collection of objects. The object is a member or

**element**of the set.

**roster method**of writing a set encloses the list of elements in a set of braces { }, such as {1, 2, 3, 4} or {2, 4, 6, 8 }

**∈**means

**element**of, i.e. x ∈ ℜ, means x is an element of the real numbers.

**|**means

**such that**. This way we can list a set without stating every element. Example to be added later…

**ø**or

**{ }**.

**union**, \cup, of two sets, A \cup B, is the set that contains all the elements of set A & all the elements of set B, listing each element only once.

**intersection**, ∩, of two sets, A ∩ B, is the set that contains the elements that are common to both of the sets.

Notation used with Sets ~ Flash video ~ Mp4 (~ 4.4MG)

Set Defintions, Word Search Game

Set Defintions, Monkey Race

Set Notations, Matching Game

Set Notations, Board Game, different questions may appear

Set Notations, Dragon’s Lair

Descriptions of Sets ~ Flash video ~ Mp4 (~ 1.7MG)

Operatons on Sets ~ Flash video ~ Mp4 (~ 4MG)

Venn Diagrams ~ Flash video ~ Mp4 (~ 3.9MG)

Venn Diagram, Steps for filling in a Venn Diagram with 3 sets

**Game Links on other sites** ~ Play at your own risk, I have not had a chance to play with them.

CyberChase Logic Zoo ~ Game for kids – other students found this one helpful

Venn Diagrams ~ one application

Venn Diagrams ~ another application

Xp Math ~ variety of games and information