Showing posts with label problem solving. Show all posts
Showing posts with label problem solving. Show all posts

Thursday, October 24, 2013

One Million Hours

Hello!

The Junior teachers have been getting together to talk about math. We have decided on a common template that we'd like to use to help you all solve math problems. We are going to us NWTT or Notice Wonder Think Therefore.

To demonstrate, we made up this question:

Then we modeled how to solve the question.

In class, we tried a question. We tried "Is it possible to live to be one million hours old?"
Most of us solved it in one of three ways. Some of us used multiplication to find out how many hours are in a year. Then we kept adding this amount until we got to 1 000 000. 
Some of us used multiplication once we found out how many hours are in a year to see how many hours old an older person would be. Some of us used our grandparent's age, some of us used a fact from the Guiness Book of Records, some of us used Tiiu's age and then promptly got sent to the office. 
Another group used division. These people divided 1 000 000 by 24 to see how many days is equal to 1 000 000 hours. Then they divided that number by 365 to see how many years is equal to 1 000 000 hours.

We talked to each other and decided that the division method was probably the most efficient. We thought it was efficient because it took the fewest amount of steps to land on a more exact answer. This doesn't mean it was the best method. If division is hard for you, this method would not work for you.