Sometimes environmentalists need to determine the number of fish in a pond. Mrs. Lenhardt's class used a simulation to show how they might do this. Using crackers in the shape of goldfish, the students used food coloring to 'tag' 60 of the crackers from a large box. These 60 crackers were then
returned to the box. Using a small scoop as a 'fishnet,' students take turns scooping out crackers, counting how many crackers are in the scoop and
how many of them are tagged
Hem
Item 4
Scoop Crackers
from
Goldfish Nettings
Tagged Total
Crackers
1
4
12
2
6
15
3
3
10
From these nettings what is the best estimate of the number of goldfish-shaped crackers in the box?
170
180
230
0 280