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Dichotomous Key Using Observable Characteristics to Identify Objects.

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Presentation on theme: "Dichotomous Key Using Observable Characteristics to Identify Objects."— Presentation transcript:

1 Dichotomous Key Using Observable Characteristics to Identify Objects

2 What is a dichotomous key? A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts". Therefore, dichotomous keys always give two choices in each step.

3 How to use a Dichotomous Key Dichotomous Key in Action

4 Start Use a dichotomous key to identify these individuals. Pick an individual to identify, When you are ready click start.

5 Is the individual male or female? Male Female

6 Is the individual wearing a hat? Hat No Hat

7 Is the individual in the military? Military Not Military

8 Is he wearing a dress uniform or a camouflage uniform? Dress Uniform Camouflage Uniform

9 Introducing He is a man wearing a hat and a military dress uniform. Arnold Return to Start

10 Introducing He is a man wearing a hat and a camouflage military uniform. Hector Return to Start

11 Introducing He is a man wearing a hat, but not wearing a military uniform. Greg Return to Start

12 Does the individual have facial hair or is he clean shaven? Facial Hair Clean Shaven

13 Is the individual wearing black? Wearing Black Not Wearing Black

14 What is the individual wearing? Suit Jeans

15 Introducing He is a man with facial hair, wearing a black suit, but not wearing a hat. Reggie Return to Start

16 Introducing He is a man with facial hair, wearing a black shirt and jeans, but not wearing a hat. Hugo Return to Start

17 Introducing He is a man with facial hair who is not wearing black or a hat. Bill Return to Start

18 What is the individual wearing? Shorts Pants

19 Introducing He is a clean shaven man who is wearing shorts, but not black or a hat. Jack Return to Start

20 Introducing He is a clean shaven man who is wearing pants, but not black or a hat. Kurt Return to Start

21 Is the individual wearing a hat? Hat No Hat

22 Is the individual wearing purple? Wearing Purple Not Wearing Purple

23 What is the individual wearing Green Boa and Hat Red Boa and Hat

24 Introducing She is wearing a purple dress and green boa and hat. Doris Return to Start

25 Does the individual have a purse? Purse No Purse

26 Introducing She is wearing a purple dress and red purse, boa, and hat. Erin Return to Start

27 Introducing She is wearing a purple dress and red boa and hat. Rhonda Return to Start

28 Introducing She is wearing a hat, but not wearing purple. Gail Return to Start

29 What is the individual wearing? Pants Skirt

30 Introducing She is wearing pants, but not a hat. Jenny Return to Start

31 What color boots is the individual wearing? Red Black

32 Introducing She is wearing a skirt and red boots, but not a hat. Mary Return to Start

33 Introducing She is wearing a skirt and black boots, but not a hat. Beth Return to Start


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