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MAKING A DICHOTOMOUS CLASSIFICATION KEY

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Presentation on theme: "MAKING A DICHOTOMOUS CLASSIFICATION KEY"— Presentation transcript:

1 MAKING A DICHOTOMOUS CLASSIFICATION KEY http://www.qacps.k12.md.us/ces/Staff2.htm

2

3 POSSIBLE “DERIVED CHARACTERS” All made of one material Is it hinged Has a sharp edge Has holes Hammer-like head

4 NO Hammer-like head

5 Hammer-like head NO Hammer-like head

6 Hammer-like head NO Hammer-like head ALL Made of Wood NOT ALL Made of Wood

7 Hammer-like head NO Hammer-like head Sides of head are different Sides of head are NOT different All wooden NOT all wooden

8 Hammer-like head NO Hammer-like head Sides of head are different Sides of head are NOT different All wooden NOT all wooden ? ?

9 Hammer-like head NO Hammer-like head Sides of head are different Sides of head are NOT different All wooden NOT all wooden ? ?

10 Hammer-like head NO Hammer-like head Sides of head are different Sides of head NOT different Making a Dichotomous key 1 b a 2a Sides of head different- 2b Sides NOT different- 2 Pick 2 and write official scientific names next to final picture 1a Hammer-like head- 1b NO hammer head- Go to 2 b a Go to ?

11 WHAT’S IN A NAME?

12 What’s in a name? “People smart” Homo sapiens Image from: http://www.earlylearning.ubc.ca/images/photo_baby.jpg

13 What’s in a name? Bald eagle Haliaeetus leucocephalus “sea eagle white headed” Asterias rubens “Star red” Image from: http://en.wikipedia.org/wiki/Image:Haliaeetus_leucocephalus-tree-USFWS.jpg Image from: http://www.essencesonline.com/k_starfish.jpg

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