Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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IntroductionLogic PatternsNumber PatternsWord Patterns

Here is a math problem you may have seen.

There are 28 students in your classroom. On Valentine's Day, every student gives a valentine to each of the other students. How many valentines are exchanged?

How would you solve this problem? George Pólya, a mathematician famous for problem solving, said that when you have a tough problem you should make the numbers simpler. Twenty-eight may just be too many! Let's change it:

There are five friends. On Valentine's Day, every friend gives a valentine to each of the other friends. How many valentines are exchanged?

Before you proceed next solve this problem and keep track of how you did it.


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