Dr. Cary Oberije, a postdoctoral researcher in The Netherlands, has found that mathematical models can be used to accurately predict patients' responses to treatment. Prediction models were used to analyze lung cancer patients' likelihood of survival and...

# When Will I Use Math?

## WeUseMath.org

# The Four Color Theorem

If you have a coloring book with a map that includes all the US states, how many different colors would you need in order to color all the states to make sure that the same color never touches itself? The four color theorem states that in a given plane, the regions can be colored using at most 4 colors so that no two adjacent regions (or states that share a border) have the same color. This theorem was proven in 1976 and was one of the first major theorems to be proven using a computer.

Know how math applies to real life, a new discovery in math, a math tidbit or an unsolved math problem? Submit a "Did You Know?" entry to the site!

The most common question students ask math teachers at every level is “When will I use math?” WeUseMath.org is a non-profit website that helps to answer this question. This website describes the importance of mathematics and many rewarding career opportunities available to students who study mathematics.

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