Problem of the Week: The Road Sign
Teacher page
 

 
What do you notice that is "unusual" about this sign?

What the students will probably see is that the sum should be 6,122. However, most students overlook the fact that finding the sum of the three numbers does not make any sense. Why would you want to add Founded, Altitude and population? Does the sum yield useful information? Why is finding the sum nonsensical?

Student Page
Problems of the Week
Home Page