Math 90: January 27, 2014: Classifications

Classifications

Sets: Collection of {1/2, 1/3, 1/4} objections.

Elements: Those objects are elements.

Roster Method: A list of items bracketed off at either end.

Natural Numbers: Counting numbers starting at {1, 2, 3…4…}

Whole Numbers: { 0, 1, 2, 3, 4….} From zero on up

Integers: Whole numbers and their opposites. {-3, -2, -1, 0, 1, 2, 3 }

Natural Numbers AKA Positive Integers

Number Lines: A number line needs two numbers for its creation. (To assign a distance).

Graphing: Grahps, yahp.

Opposities: Have the same distance from zero. {5, -5}

Absolute Value: Distance from Zero

Ordering: -2 < 3 ,  -5 > -7

The alligator wants more. Interchangeable & Reversible. Greater than, Less than.

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