making a dichotomous classification key
TRANSCRIPT
MAKING A DICHOTOMOUS CLASSIFICATION KEY
http://www.qacps.k12.md.us/ces/Staff2.htm
POSSIBLE“DERIVED CHARACTERS”
• All made of one material
• Is it hinged
• Has a sharp edge
• Has holes
• Hammer-like head
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 headare NOT different
All wooden NOT all wooden
Hammer-like head NO Hammer-like head
Sides of head are different
Sides of headare NOT different
All wooden NOT all wooden? ?
Hammer-like head NO Hammer-like head
Sides of head are different
Sides of headare NOT different
All wooden NOT all wooden? ?
Hammer-like head NO Hammer-like head
Sides of head are different
Sides of headNOT different
Making a Dichotomous key
1ba
2a Sides of head different- 2b Sides NOT different-
2
Pick 2 and write officialscientific names next tofinal picture
1a Hammer-like head-1b NO hammer head-
Go to 2
ba
Go to ?
Go to ?
WHAT’S IN A NAME?
What’s in a name?
“People smart”Homo sapiens
Image from: http://www.earlylearning.ubc.ca/images/photo_baby.jpg
What’s in a name?
Bald eagleHaliaeetus 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