Lesson 5
Facts About Garbage

• There are 365 days in one year.
• There are 7 days in one week and 24 hours in one day.
• There are 52 weeks in one year.
• There are 12 months in one year.
• There are 16 cups in one gallon.
• Recycling one aluminum can saves the energy equivalent of one cup of gasoline.
• Recycling one aluminum can saves enough energy to light a 100-watt light bulb for 3.5 hours (210 minutes).
• Each person generates about 5 pounds of garbage per day.
• Each pound of aluminum makes 32 cans.

Practice Challenge

A. A fourth-grade class decided to collect cans for The Great Aluminum Can RoundUp. How many cans will they need to collect if they want to save the "equivalent" energy in 100 cups of gasoline?

B. If each student in your class recycles one aluminum can each day, how much "gasoline energy" would the class save in one week? In one year? How many gallons of gasoline would they have saved?

See Challenges 1-4.