Just how much is 300 billion? There are supposedly this many stars in our skies! Mr. Vanden Heuvel calculates about how many blades of grass are in his lawn, but doesn't get close. Then he computes how many grains of sand there are in a container and then shows about how big of a beach area might contain 300 billion of them. Use this clip to give youngsters in an astronomy or a math class a small glimpse at how big of a number 300 billion is!