SMART board Miss Andrews’ Desk

6Shamena

5Salma

4Dorothy

3Tatiana

2Kiara

1Jimmy

12Martell

11Deshandre

10Stephanie

9Shantiera

8Christian

7Lisa

18Marcie

17Auziauna

16Patricia

15Jorge

14Ashley

13Osmar

24Jamal

23Rasheed

22Erick

21Devon

20Fabian

19Samuel

28Briana

27Richard

26 25

32 31 30 29

Seats: period 1

SMART board Miss Andrews’ Desk

6Abdi

5Noel

4Kiala

3Kaila

2Dominique

1Melodie

12Mary

11Troy

10D’Andrew

9Maria

8Daniel

7Felix

18Andre

17Isaiah

16Noemi

15Luis

14Rosana

13Justine

24Renee

23Jakar

22Tyrone

21Nakerie

20Juan

19Breanna

28Louis

27Edwin

26 25

32 31 30 29

Seats: period 5

Catalyst4

minutes!

1. What is ecology?

2. What is an ecosystem? Describe the ecosystem in the picture.

3. What is a biotic factor? Give 1 example from the picture.

4. What is an abiotic factor? Give 1 example from the picture.

5. Using the picture, create a definition for population.

100.B1: Raise a hand

1: Demonstrate North Star traits– Problem solver– Goal driven

3: 100% seated before the bell

3: “Ready for your attention”

3: Lab / activity clean up

5: 100% on task during practice

5: 80% exit ticket average

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Friday!

100.BMonday Tuesday Wednesday Thursday Friday Total / Goal

1: Biology - - - 39 39 / 40

3: Ciencias Fisicas - 14 - 16 30 / 60

5: Biology - 18 - 36 54 / 60

8: Physical Science - 24 - 22 46 / 60

10: Ciencias Fisicas

- 16 - 24 40/ 60

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Evolution Test6.1 Explain how evolution is demonstrated by

evidence from the fossil record, comparative anatomy, embryology, gene flow, and examples of natural selection.

6.2 Describe species as reproductively distinct groups of organisms.

6.3 Describe the role that geographic isolation can play in speciation.

6.4 Recognize that species are further classified into a hierarchical taxonomic system (kingdom, phylum,

class, order, family, genus, species) based on similar characteristics.

Dorothy

Stephanie

Briana

Martell

Auziauna

Richard

Fabian

Shantiera

Kiara

Renee

Tyrone

D’Andrew

Noemi

Breanna

Luis

Nakerie

Mary

unit 7: ecology

ObjectivesWe are learning to…

explain the effects of interactions between

populations in ecosystemsWe will be successful when we

can…explain how birth, death,

immigration, and emigration

influence population size

Agenda

• Catalyst 5

• Population Intro 20

• Guided Practice 5

• Partner Practice 5

• Independent Practice 10

• Exit Ticket 5

sciencegenius!

PopulationsA population is a group of individual organisms

– Must be of the same species

– Must live in the same habitat

Birth Rate = number of organisms born

Death Rate = number of organisms that die

How do populations change?

Immigration = the number of organisms that move INTO a

population

Emigration = the number of individuals that EXIT from a

population

Immigration = Into a population

Emigration = Exiting a population

How do populations change?

SDHS PopulationEach year we have a new freshmen class

SDHS cardinals are born

Each year we have a graduating senior class SDHS cardinals “die”

Each year we have students that transfer to SouthSDHS cardinals immigrate

Each year we have students that transfer from SouthSDHS cardinals emigrate

This year 340 freshmen started at South

This year 220 seniors graduated from

South

This year 80 students transferred into

South

This year 60 students transferred out of

South

Is the SDHS population increasing or decreasing? Why?

INCREASIN

GSDHS Population

Exponential Growth

A growth pattern in which individuals reproduce at a constant rate

This occurs if a population has:

Unlimited resources

Few predators

No disease

Exponential GrowthA population of bacteria starts with one individual. The individuals can

reproduce every 20 minutes.

1. How many individuals will the population have after 1 hour?

2. How many individuals will the population have after 2 hours?

3. How many individuals will the population have after 3 hours?

Can populations grow exponentially forever? Why or why not?

Logistic GrowthA growth pattern in which the population’s

growth rate stops or slows down after a period of exponential growth

If a population:

Has its birth rate decrease

Has its death rate increase

Has decreased immigration

Has increased emigration Reaches its carrying capacity or the maximum number of

individuals a habitat can support

exponential growth logistic

growth

Population Growth

1. Carrying capacity

2. Exponential growth

3. Logistic growth

Guided PracticeGrowth Rate Factor Effect on Population

SizeIncreased birth rate  

 

Decreased birth rate   

Increased death rate   

Decreased death rate   

Increased immigration rate   

Decreased immigration rate   

Increased emigration rate   

Decreased emigration rate   

Birth rate > death rate   

Emigration rate > immigration rate

  

Birth rate = death rate   

Partner Practice5

minutes!

1

Cause Effect on Population Size Growth Rate Factor

During the 1920s many Eastern Europeans leave their homeland to

come to the United States.

Eastern Europe: United States:

Eastern Europe: United States:

Many more babies were born in the US in the post-World War II decades than in the pre-World War II decades

US: US:

China imposed a “one child” policy in 1970 which is still in effect today.

China: China:

Seals are hunted for their fur and meat in some areas resulting in the death of

many seals.

Seals: Seals:

Independent Practice10

minutes!

0

Independent PracticeCattle-like animals called wildebeests live in Africa. The wildebeest

population decreased for many years because of a fatal virus. The virus was eliminated in the 1960s by vaccinating the wildebeests against the

virus. The graph below shows changes in the size of the wildebeest population from 1961 to 1983.

10minute

s!

0

Exit TicketYou may use your assignments!

You must work quietly & independently.

Talking will NOT be tolerated.

4minute

s!

BIG goal = 80%

4minute

s!

0

Exit TicketYou may use your assignments!

You must work quietly & independently.

Talking will NOT be tolerated.

4minute

s!

BIG goal = 80%

4minute

s!

0

Thank You!Thank you for donating to our classroomThanks so much for supporting our field tripWe appreciate your generous donation

My favorite part of the field trip was…The best part of the day was…I loved seeing…

I learned about…Our field trip helped me understand…This experience was important to me because…

1

2

3

Chase Glisson

Lindy LaPlante

Karmen

Somers

1.

Catalyst(big basket)

2.

Population Growth #39 (binder)

Friday, April 25th

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