MAKE A PREDICTION How does camouflage affect survival

MAKE A PREDICTION How does camouflage affect survival rates? Slide show by Kelly Riedell/Brookings Biology http: //animals. pppst. com/banner_camouflage. gif

SET UP • Count out 50 black beads and place in box • Count out 50 “other” color beads and place in box • Fill in the “AT START” columns on your data sheet. PERCENT OF TOTAL = ___# of beads__ X 100 total beads in box

FEEDING RULES CLOSE EYES/ LOOK AWAY during mixing. Look quickly at box when it stops. Pick the FIRST ONE you SEE! NO picking your favorite color! Only pick ONE AT A TIME! Swirl slowly, choose, repeat until you remove 20 beads. http: //www. feebleminds-gifs. com/ani 5. html

AFTER 1 ST FEEDING • Calculate number of black beads IN BOX • Calculate number of “other” color beads IN BOX • Fill in “AFTER 1 ST FEEDING” column on data sheet. PERCENT OF TOTAL = ___# of beads_ X 100 total beads in box

http: //greenwood. alpinedistrict. org/Root%20 Greenwood%20/images/pictures/Mom, %20 Dad%20&%20 Baby. jpg http: //pro. corbis. com/images/42 -18867237. jpg? size=67&uid=%7 B 21 E 60102 -7098 -4 CA 2 -B 76 E-6 ACC 29 D 9 CA 18%7 D REPRODUCE 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 1 st REPRODUCTION” column on data sheet.

FEEDING RULES CLOSE EYES/ LOOK AWAY during mixing. Look quickly at box when it stops. Pick the FIRST ONE you SEE! NO picking your favorite color! Only pick ONE AT A TIME! Swirl slowly, choose, repeat until you remove 20 beads. http: //www. feebleminds-gifs. com/ani 5. html

AFTER 2 nd FEEDING • Calculate number of black beads IN BOX • Calculate number of “other” color beads IN BOX • Fill in “AFTER 2 nd FEEDING” column on data sheet. PERCENT OF TOTAL = ___# of beads_ X 100 total beads in box

http: //greenwood. alpinedistrict. org/Root%20 Greenwood%20/images/pictures/Mom, %20 Dad%20&%20 Baby. jpg http: //pro. corbis. com/images/42 -18867237. jpg? size=67&uid=%7 B 21 E 60102 -7098 -4 CA 2 -B 76 E-6 ACC 29 D 9 CA 18%7 D REPRODUCE AGAIN 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 2 nd REPRODUCTION” column on data sheet.

FILL IN CLASS DATA SHEET on projector with your group’s data Copy the class data onto YOUR data sheet