Definition
Classification
Classification means placing objects or ideas into groups using stated attributes or rules.
Continue from this idea into connected AXIO math.
Boundary check: A class can sit inside another: every square shown is also a rectangle.
What it means
Choose a rule, test every item with the same rule, and name the class it belongs to. A shape can fit more than one true class: every square is also a rectangle because it has all the rectangle rules.
Remember it
Think: choose the rule, test each item, name the class.
Example
Rule: classify triangles by side lengths. A triangle with three equal sides goes in the equilateral class; one with exactly two equal sides goes in the isosceles class; one with no equal sides goes in the scalene class.
Watch for
Classification is about membership in classes, not merely lining items up. Classes may overlap or form a hierarchy.
Common mix-up
A square does not stop being a rectangle; one object can belong to several valid classes.
Exact meaning
Classification is the mathematical process of assigning objects, values, or ideas to one or more classes according to stated attributes or rules; classes may be separate, overlap, or sit inside broader classes.