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

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 NOT different

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. WHAT’S IN A NAME?

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

12. 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