[youtube]http://www.youtube.com/watch?v=DQPQ_q59xyw[/youtube]

This week we have been inquiring into measuring tools and measuring systems that we have to help us keep standard units of measurement no matter where we are in the world.  Above is a video that is helpful in understanding why these standard units of measurements came to be part of our measuring world today.  What did this video help you understand?  What does this video still make you wonder about?