Packing Problems

Estimate the number of objects required to fill a container:

How many baseballs fit in a Boeing 747?

Estimate the number of objects required to fill a specified volume:

How many m&m's would fit in 2 liters?

Covering Problems

Estimate the number of objects required to cover another object:

How many sheets of paper would it take to cover the earth?

Estimate the number of objects required to cover a specified area:

pennies to cover 2 square miles

Length Problems

Estimate the number of objects required to circle another object:

How many grains of rice would it take to stretch around the moon?

Estimate the number of objects required to stretch a specified length:

number of toothpicks to stretch 10 miles