MAKING A DICHOTOMOUS CLASSIFICATION KEY

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

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

Hammer-like head NO Hammer-like head

Hammer-like head NO Hammer-like head

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

Hammer-like head NO Hammer-like head Sides of head are different Sides of head NOT different

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

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

WHAT’S IN A NAME?

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

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