This week we will devote the blog to math problems celebrating Earth Day, Friday April 22. For starters, here are a couple of our favorites:

If each person uses an average of 700 pounds of paper products per year, *how many pounds of paper does your family use a year? Your class?*

Americans buy 29 billion bottles of water a year, more than any other nation. It takes 17 million barrels of crude oil to make this many plastic water bottles. *How many billion bottles can be manufactured from one barrel of crude oil?*

Extra Credit: *If Americans only bought 10 billion bottles next year how many barrels of oil would that take?*