Dichotomous Key

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Instructions
Bell
SPI
0807.5.1
1) First click on "View" from the top-menu bar.Oct 13, 2014
Classification Keys
Work
2) Then click on "Slide Show" from the drop-down menu.
3) Then
useheading
the right-arrow
button on
yourofkeyboard
to
1) Write
your
in the top/right
corner
your paper
this presentation.
2) advance
Copy thisthrough
dichotomous
key template on your paper
3) Copy it three times
Steps
A.
1
B.
Dichotomous Key
It is a
Go to step 2
2
A.
B.
It is a
Go to step 3
3
A.
B.
It is a
Go to step 4
4
A.
B.
It is a
Done
Plan
SPI 0807.5.1
Classification Keys
Science
1) Discuss bell work, check student work, &tally results
2) Ask about birthdays
3) View and discuss notes about classification-keys
4) Activity: Make three classification keys at the student work
stations
Dichotomous key 01: 3 insects
Dichotomous key 02: 4 animals
Dichotomous key 03: 3 plants
5) (Time Permitting) View Brainpop video about classification
Homework: Copy into your agenda
None

Humor

 Silly Thought 09 
Teacher: “Sally, do you thirst after knowledge?
Student: “No, Mr. Elliott, I thirst after salted
popcorn. “
Notes
SPI 0807.5.1
Classification Keys
Science
What is taxonomy?
Taxonomy is the modern science of describing, classifying,
and naming organisms
 Around 1735 Carolus Linnaeus (Swedish botanist & zoologist)
created a system of naming organisms called binomial
nomenclature
What is binomial nomenclature?
 It is a two part naming method
 Uses the last 2 classification levels (Genus and Species) to
name an organism
SPI 0807.5.1
Classification Keys
Notes
Science
8-level classification system
Example: Human Beings (Homo Sapiens)
1) Domain: Eukarya
2) Kingdom: Animalia
3) Phylum: Chordata
Binomial
Nomeclature
4) Class: Mammalia
5) Order: Primates
2 part naming system
6) Family: Hominoidia
7) Genus: Homo
8) Species: Sapiens
1st part
2nd part
Activity
SPI 0807.5.1
Classification Keys
Science
Classification Key Activity
T.Rex Dichotomous Key)
Stegosaurus
(A.K.A:
Pterodactyl
Apatosaurus
After reviewing the following you will make a dichotomous key
Here is an example using four dinosaurs
Steps
Dinosaur Dichotomous Key
A. It has wings
It is a Pterodactyl
1
B. It does not have wings
Go to step 2
2
A. It walks on two legs
B. It does not walk on 2 legs
It is a T.Rex
Go to step 3
3
A. It has a long neck
B. Does not have a long neck
It is a Apatosaurus
Go to step 4
4
A. It has spikes on its back
B. Does not have spikes
It is a Stegosaurus
Done
Activity
SPI 0807.5.1
Classification Keys
Science
Activity: Make three classification keys at the student work stations
Instructions:
A) Create up to three dichotomous keys (must do at least two).
B) Write your keys on your own paper
C) Don't copy other student's keys. Do your own work.
D) Turn in your paper at the end of class on the plastic drawers.
E) If you finish early, on a separate piece of paper, copy the
dichotomous key from page 52, and turn it in.
Dichotomous key 01: Identify 3 insects
Dichotomous key 02: Identify 4 animals
Dichotomous key 03: Identify 3 plants
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