1. How does camouflage affect survival rates?
MAKE A PREDICTION
How does camouflage affect survival rates?

2. 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 total beads in box

3. 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.

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

5. REPRODUCE Number of black beads in box ÷ 2
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 1st REPRODUCTION” column on data sheet.

6. 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.

7. AFTER 2nd FEEDING 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 total beads in box

8. REPRODUCE AGAIN Number of black beads in box ÷ 2
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 2nd REPRODUCTION” column on data sheet.

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