1. Add dates to the calendar on (pg. 1)
Learning Target:(pg. 3)
Examine organisms using dichotomous keys for identification
Science Starter:(pg. 5)
Add dates to the calendar on (pg. 1)
February Genetics Test Corrections DUE
February Beak Adaptation project (Library)
February Beak Adaptation project (Library)
February Beak Adaptation project (Library)
February 11 Vocabulary Test
(Natural Selection and Adaptation)
February 17 Natural Selection and Adaptation Test

2. Essential question (pg 7) TEKS (pg 8) & Vocabulary (pgs 11-19)
How do you use a dichotomous key to identify organisms based on their structural characteristics?

3. Let’s Try one: Turn to pg. 60
There are 10 items around the room! Correctly identify the items using the dichotomous key
Our example a crayon.
Go to step 1
You will have time to identify each item.
(No more than 3 people at an item at a time)

4. Notes on Dichotomous Keys (pg 50)
A dichotomous key is a tool that allows the user to determine the identity of items in the natural world based on the items characteristics
“Dichotomous” means
“divided into two parts” Greek origin
Dichotomous keys always give two distinct choices in each step, often they are opposites
Black/White; Good/Evil; Pointed/Rounded

5. Exit Ticket Show Mrs. Hinds or Mrs. Chew the Dichotomous Key
You will need to have a check mark on the Key before leaving class!