This involves the concept of relativity and as a matter of fact, it might wish to concentrate the problem without outside disband retrieves it when the cork minutes. He then turns around, chasing the cork, tractions.
While rowing his boat upstream, Anik drops a cork overboard and continues growing for 10 more minutes. He then turns around, chasing the cork, and retrieves it when the cork has traveled 1 mile downstream. What is the rate of the stream?
Rather than approaching this problem by the traditional methods, common in an algebra course, consider the following
The problem can be made significantly easier by considering the notion of relativity.
It does not matter if the stream is moving and carrying Anik downstream, or is still. We are concerned only with the separation and the coming together of Anik and the cork.If the stream were stationary, Anik would require as much time rowing to the cork as he did growing away from the cork.
That is, he would require 10+10=20 minutes. Since the cork travels 1 mile during these 20 minutes, it's (i.e., the stream's) rate of speed is 3 miles per hour.
It is a concept worth understanding, for it has many useful applications in everyday life thinking processes.
here is a fun activity that can be presented in a number of different ways. The justification uses simple algebra, but the fun is the oddity. Consider this very unusual relationship.
Logic Math More information is here +Mathematics In Education & Industry
Description the logic: