1. Basics of Classification
By Mr. Krall

2. Classification
- Putting things into groups
based on similarities.

3. Classifying = putting thing into groups based on similarities.
CIRCLE GROUP
They are classified by their similar shapes.
Let’s classify.
SQUARE GROUP
TRIANGLE GROUP

4. Classifying = putting thing into groups based on similarities.
GREEN GROUP
This time they are grouped by color.
Here’s another way.
BLUE GROUP
RED GROUP

5. Items can be classified in different ways…
Classified by shape
Either of these classification systems works.
Classified by color
circle
square
triangle
blue
green
red
… and there’s nothing wrong with that.

6. Sometimes a classification system fails when something new comes along…
Classified by shape
Classified by color
Hmmm…
What’s this?
circle
square
triangle
blue
green
red

7. Both systems worked for all the current objects, but…
Classified by shape
It doesn’t fit into the other system however..
Classified by color
It fits right in over here.
circle
square
triangle
blue
green
red ?
now what do we do?

8. When the system doesn’t work...
If you can’t adjust the system...
So we have to make one.
Now our new object has a group to go in.
We don’t have a group for this new item.
Classified by color
blue
green
red
orange ?
…then you need a new system.
…it’s okay to adjust the system.

9. Classification
- Putting things into groups
based on similarities.