From the list of words below, make some small classes of objects:

1. arrow
2. bee
3. crocodile
4. fish
5. kite
6. sailboat
7. sparrow

• 1,2,5,7 (found in the air)
• 3,4,6 (found in the water)
• 2,3,4,7 (animals) {and possibly 5}
• 3,4,5,7 (have tails)
• etc.

spaniel - type of dog used for hunting.

Parts of two classifications

• 1. form - descent - dog - Carnivore - Mammal - Vertebrate - Chordate - Animal

  Classification by common descent is a tree form. (to a extent, each species has one parent species, each sexually reproducing organism has two parents)

• 2. function - use - hunting

Set of dogs (or set of animals) vs. set of things used in (or to help with) hunting.

Set of things used in (or to help with) hunting.

• Animals
  • Some dogs (hounds)
  • Horses
• Weapons
  • Guns
  • Bow and arrows
  • Spears
• Traps and snares?

Pratchett? Classification of the World according to dogs.

• Things to eat
• Things to chase
• Things to run away from
• Things to mate with
• Things to bark at