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MAKE A PREDICTION How does camouflage affect survival rates? - PowerPoint PPT Presentation


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MAKE A PREDICTION How does camouflage affect survival rates?. http://animals.pppst.com/banner_camouflage.gif. Animal Camouflage. Hypothesis: Write your prediction here. How does camouflage affect survival rates? Purpose: To view the effects of animal camouflage on natural selection.

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MAKE A PREDICTION

How does camouflage affect survival rates?

http://animals.pppst.com/banner_camouflage.gif


Animal camouflage
Animal Camouflage

  • Hypothesis: Write your prediction here. How does camouflage affect survival rates?

  • Purpose: To view the effects of animal camouflage on natural selection.

  • Materials: black beads, colored beads, 1 multicolored container with lid, 1 black and white container with lid, data sheet, pencil or pen.


Procedure
Procedure:

  • Count out 50 black beads and place in container

  • Count out 50 “other” color beads and place in container

  • Fill in the “AT START” columns on your data sheet.

    PERCENT OF TOTAL = ___# of beads__ X 100 total beads in box


Feeding rules

FEEDING RULES

4. Look into container and pick 1 bead.

Keep your eyes OPEN!

Pick the FIRST ONE you SEE!

NO picking your favorite color!

Only pick ONE AT A TIME!

5. Shake, choose, repeat until you remove 20 beads.

http://www.feebleminds-gifs.com/ani5.html


After 1 st feeding
AFTER 1ST FEEDING

  • Calculate number of black beads IN BOX

    7. Calculate number of “other” color beads IN BOX

    8. Fill in “AFTER 1ST FEEDING” column on data sheet.

    PERCENT OF TOTAL = ___# of beads_ X 100 total beads in box


Reproduce

http://greenwood.alpinedistrict.org/Root%20Greenwood%20/images/pictures/Mom,%20Dad%20&%20Baby.jpghttp://greenwood.alpinedistrict.org/Root%20Greenwood%20/images/pictures/Mom,%20Dad%20&%20Baby.jpg

http://pro.corbis.com/images/42-18867237.jpg?size=67&uid=%7B21E60102-7098-4CA2-B76E-6ACC29D9CA18%7D

REPRODUCE

9. Number of black beads in box ÷ 2

Add this many black beads to box

10. Number of “other” color beads in box ÷ 2

Add this many “other” color beads to box

(repeat step 9 using colored beads)

Round UP for odd numbers of beads.

11. Fill in “AFTER 1st REPRODUCTION” column on data sheet.


12 feed again

12. FEED AGAINhttp://greenwood.alpinedistrict.org/Root%20Greenwood%20/images/pictures/Mom,%20Dad%20&%20Baby.jpg

Keep your eyes open!

Pick the FIRST ONE you SEE!

NO picking your favorite color!

Only pick ONE at a time!

Shake, choose, repeat until you remove 20 beads.

http://www.feebleminds-gifs.com/ani5.html


13 calculate and record the number of each type of bead in your container
13. Calculate and record the number of each type of bead in your container

  • Calculate number of black beads IN BOX

  • Calculate number of “other” color beads IN BOX

  • Fill in “AFTER 2nd FEEDING” column on data sheet.

    PERCENT OF TOTAL = ___# of beads_ X 100 total beads in box


14 reproduce again

http://greenwood.alpinedistrict.org/Root%20Greenwood%20/images/pictures/Mom,%20Dad%20&%20Baby.jpghttp://greenwood.alpinedistrict.org/Root%20Greenwood%20/images/pictures/Mom,%20Dad%20&%20Baby.jpg

http://pro.corbis.com/images/42-18867237.jpg?size=67&uid=%7B21E60102-7098-4CA2-B76E-6ACC29D9CA18%7D

14. REPRODUCEAGAIN

Number of black beads in box ÷ 2

Add this many black beads to box

Number of “other” color beads in box ÷ 2

Add this many “other” color beads to box

Round up for odd numbers of beads.

Fill in “AFTER 2nd REPRODUCTION” column on data sheet.


FILL IN CLASS DATA SHEEThttp://greenwood.alpinedistrict.org/Root%20Greenwood%20/images/pictures/Mom,%20Dad%20&%20Baby.jpgon projector with your group’s dataCopy the class data onto YOUR Class data sheet


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