From the U.S. Census Bureau Find fun facts about Valentine's Day—a holiday centuries old that celebrates love—from who sent the first valentine to how many Americans send love messages today…
The Numbers Behind the Olympic Games in London by Catherine McNiff Olympic Medals Source: London 2012 Related Links 2012 Summer OlympicsMemorable Olympic…
Knowing your numbers helps you know which direction you are going on U.S. highways. Here's how the highway systems are numbered.Interstate Highways Three highways run from coast to coast: I-10, I-…
April 22, 2017, marks the 47th anniversary of Earth Day—a day intended to inspire awareness and appreciation for the Earth's natural environment. Organizers started Earth Day in response to a…
A cardinal number tells "how many." Cardinal numbers are also known as "counting numbers," because they show quantity. Here are some examples using cardinal numbers:8 puppies14 friends Ordinal…
Multiplying Fractions If your friend has one-quarter of a pie, and she gives you half, how much of the pie do you have? Or, to put it another way, what's half of one-quarter? Or, to put it into…
