Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
SlideShare a Scribd company logo

Unit2 natural selection

•Download as PPT, PDF•
•
Heather Liu
Heather Liu

This document provides instructions for a classroom activity modeling natural selection. Students will be divided into teams to simulate a hunt. Each team will have colored dots representing different populations and roles including wardens and hunters. The activity involves multiple timed hunts where hunters collect dots while the warden tracks time and remaining dots that reproduce. Students will record population data after each hunt to model how traits influence survival over generations.

1 of 10
Bellringer  Addthe following definition to your vocabulary list in your journal: Natural selection: A mechanism of evolution in which biological traits are kept or not to allow for better adaptation to the environment and fitness (recall adaptation and fitness)*
Unit 2: Modeling Natural Selection Ms. Liu 10/12/11
Today, we’re going hunting!!
Roles/Players  Write down Team # and the fabric color  In teams of 4, designated roles and write down name next to role on sheet: – The warden – Hunter 1 – Hunter 2 – Hunter 3
Directions  Open up book to p. 52 and read “Modeling Natural Selection  Count out 10 dots for each color on your white paper  Record the colors of dots and that number of starting population on your data sheet  Then spread out all the dots you counted out on your fabric evenly
Now We hunt! HUNT #1  Warden – Keep track of time, allow 20 sec for hunting  All hunters – Pick up dots 1 by 1 – Using only 1 hand for 20 sec
Record data  Each hunter – Record the number of dots for each color – Share your data with your team  Warden – collect the remaining dots on the fabric – For EVERY remaining dot, add 3 more (these are offspring)
HUNT #2  Repeat Hunt:  Warden – keeps time for 20 sec  Hunters – pick up dots 1 by 1 for 20 sec
HUNT #3  Repeat: – Record data – Add 3 dots for every remaining dot on fabric  Repeat hunt: – Warden keeps time for 20 sec – Hunters – pick up dots 1 by 1 for 20 sec
HUNT #3  Repeat: – Record data – Add 3 dots for every remaining dot on fabric  Repeat hunt: – Warden keeps time for 20 sec – Hunters – pick up dots 1 by 1 for 20 sec

More Related Content

Unit2 natural selection

  • 1. Bellringer  Addthe following definition to your vocabulary list in your journal: Natural selection: A mechanism of evolution in which biological traits are kept or not to allow for better adaptation to the environment and fitness (recall adaptation and fitness)*
  • 2. Unit 2: Modeling Natural Selection Ms. Liu 10/12/11
  • 4. Roles/Players  Write down Team # and the fabric color  In teams of 4, designated roles and write down name next to role on sheet: – The warden – Hunter 1 – Hunter 2 – Hunter 3
  • 5. Directions  Open up book to p. 52 and read “Modeling Natural Selection  Count out 10 dots for each color on your white paper  Record the colors of dots and that number of starting population on your data sheet  Then spread out all the dots you counted out on your fabric evenly
  • 6. Now We hunt! HUNT #1  Warden – Keep track of time, allow 20 sec for hunting  All hunters – Pick up dots 1 by 1 – Using only 1 hand for 20 sec
  • 7. Record data  Each hunter – Record the number of dots for each color – Share your data with your team  Warden – collect the remaining dots on the fabric – For EVERY remaining dot, add 3 more (these are offspring)
  • 8. HUNT #2  Repeat Hunt:  Warden – keeps time for 20 sec  Hunters – pick up dots 1 by 1 for 20 sec
  • 9. HUNT #3  Repeat: – Record data – Add 3 dots for every remaining dot on fabric  Repeat hunt: – Warden keeps time for 20 sec – Hunters – pick up dots 1 by 1 for 20 sec
  • 10. HUNT #3  Repeat: – Record data – Add 3 dots for every remaining dot on fabric  Repeat hunt: – Warden keeps time for 20 sec – Hunters – pick up dots 1 by 1 for 20 sec