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VOCABULARY: Classification Dichotomous Key

VOCABULARY: Classification Dichotomous Key. Objectives: You will be able to explain why classification systems are important. You will be able to demonstrate your understanding with a dichotomous key. Question: Why do we classify things (like at the shoe store or the grocery store)?

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VOCABULARY: Classification Dichotomous Key

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  1. VOCABULARY: Classification Dichotomous Key

  2. Objectives: • You will be able to explain why classification systems are important. • You will be able to demonstrate your understanding with a dichotomous key.

  3. Question: Why do we classify things (like at the shoe store or the grocery store)? To make things easier!

  4. Question: Why do scientists classify things? TO MAKE THINGS EASIER

  5. 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.

  6. Dichotomous Key • Divides a larger group in smaller groups • Typically, it may separate objects into groups that “have it” and those that “don’t have it”

  7. Look at these Pictures

  8. What do they have in Common?

  9. Copy this diagram

  10. Dichotomous Key of Transportation Vehicles Vehicles with wheels:

  11. Dichotomous Key of Transportation Vehicles Vehicles with wheels: Canoe, boat, sailboat, Unicycle, skates, a/p, bike, train, car, bus

  12. Dichotomous Key of Transportation Vehicles Vehicles with wheels: Unicycle, skates, ap, bike, train, car, bus Canoe, boat, sailboat, Wheels made of rubber/plastic:

  13. 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

  14. 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:

  15. 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

  16. What are These?

  17. Animals

  18. Dichotomous Key of Animals Animals with 4 legs

  19. Dichotomous Key of Animals Animals with 4 legs: Ostrich, worm, shark, man, rooster Horse, gorilla, cow

  20. Dichotomous Key of Animals Animals with 4 legs : Horse, gorilla, cow Ostrich, worm, shark, man, rooster Animals with tail:

  21. Dichotomous Key of Animals Animals with 4 legs: Horse, gorilla, cow Ostrich, worm, shark, man, rooster Animals with tail: Horse, cow gorilla

  22. 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:

  23. 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

  24. 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

  25. Class Activity

  26. Homework: INTERNET QUESTIONS WRITE A PARAGRAPH SUMMARIZING THE AIM USING THE VOCABULARY

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