AIM: What is a Dichotomous Key?

Report
AIM: What is a Dichotomous Key?
VOCABULARY:
Classification
Dichotomous Key
AIM: What is a Dichotomous Key?
Objectives:
1. You will be able to explain why
classification systems are important.
2. You will be able to demonstrate your
understanding with a dichotomous key.
AIM: What is a Dichotomous Key?
Question:
Why do we classify things (like at the
shoe store or the grocery store)?
To make things easier!
AIM: What is a Dichotomous Key?
Question:
Why do scientists classify things?
TO MAKE THINGS EASIER
AIM: What is a Dichotomous Key?
AIM: What is a Dichotomous Key?
Is a system used by scientists to
CLASSIFY unknown organisms by
examining the characteristics of the
organism and then determining to
which group that unknown organism
should be placed based upon those
characteristics.
AIM: What is a Dichotomous Key?
1. Divides a larger group in smaller
groups
2. Typically, it may separate objects into
groups that “have it” and those that
“don’t have it”
AIM: What is a Dichotomous Key?
AIM: What is a Dichotomous Key?
AIM: What is a Dichotomous Key?
AIM: What is a Dichotomous Key?
Dichotomous Key of Transportation Vehicles
Vehicles with wheels:
AIM: What is a Dichotomous Key?
Dichotomous Key of Transportation Vehicles
Vehicles with wheels:
Unicycle, skates, a/p,
bike, train, car, bus
Canoe, boat,
sailboat,
AIM: What is a Dichotomous Key?
Dichotomous Key of Transportation Vehicles
Vehicles with wheels:
Unicycle, skates, ap,
bike, train, car, bus
Canoe, boat,
sailboat,
Wheels made of rubber/plastic:
AIM: What is a Dichotomous Key?
Dichotomous Key of Transportation Vehicles
Vehicles with wheels:
Unicycle, skates, ap,
bike, train, car, bus
Canoe, boat,
sailboat,
Wheels made of rubber/plastic:
Unicycle, skates, ap
bike, car, bus
train
AIM: What is a Dichotomous Key?
Dichotomous Key of Transportation Vehicles
Vehicles with wheels:
Unicycle, skates, ap
bike, train, car, bus
Canoe, boat,
sailboat,
Wheels made of rubber/plastic:
Unicycle, skates, ap
bike, car, bus
train
Carries over 10 people:
AIM: What is a Dichotomous Key?
Dichotomous Key of Transportation Vehicles
Vehicles with wheels:
Unicycle, skates,
bike, train, car, bus
Canoe, boat,
sailboat,
Wheels made of rubber/plastic:
Unicycle, skates,
bike, car, bus
train
Carries over 10 people:
Bus, ap
Unicycle, skates
bike, car
AIM: What is a Dichotomous Key?
AIM: What is a Dichotomous Key?
AIM: What is a Dichotomous Key?
Dichotomous Key of Animals
Animals with 4 legs
AIM: What is a Dichotomous Key?
Dichotomous Key of Animals
Animals with 4 legs:
Horse, gorilla, cow
Ostrich, worm,
shark, man, rooster
AIM: What is a Dichotomous Key?
Dichotomous Key of Animals
Animals with 4 legs :
Horse, gorilla, cow
Animals with tail:
Ostrich, worm,
shark, man, rooster
AIM: What is a Dichotomous Key?
Dichotomous Key of Animals
Animals with 4 legs:
Horse, gorilla, cow
Ostrich, worm,
shark, man, rooster
Animals with tail:
Horse, cow
gorilla
AIM: What is a Dichotomous Key?
Dichotomous Key of Animals
Animals with 4 legs:
Horse, gorilla, cow
Ostrich, worm,
shark, man, rooster
Animals with a tail:
Horse, cow
Animals with utters:
gorilla
AIM: What is a Dichotomous Key?
Dichotomous Key of Animals
Animals with 4 legs:
Horse, gorilla, cow
Ostrich, worm,
shark, man, rooster
Animals with a tail:
Horse, cow
gorilla
Animals with utters:
cow
horse
AIM: What is a Dichotomous Key?
Tips for Classifying
• Carefully observe objects to “notice”
similarities and differences
• Place objects into either one group or
another – not both groups
• Examine each group you create – to
see if it can be further subdivided
AIM: What is a Dichotomous Key?
Class Activity
AIM: What is a Dichotomous Key?
Homework:
INTERNET QUESTIONS
WRITE A PARAGRAPH SUMMARIZING
THE AIM USING THE VOCABULARY

similar documents