1 Introducing the Metric and Imperial Measuring Systems
1 Introducing the Metric and Imperial Measuring Systems
If you watched the introduction video, you’ll remember that Chad talked about the “SO WHAT” videos. Here is the first of those videos.
https://video.bccampus.ca/id/0_k5lnaapi?width=608&height=402&playerId=23448552
Click play on the following audio player to listen along as you read this section.
https://video.bccampus.ca/id/0_1eigqttw?width=608&height=50&playerId=23448552
This chapter deals with working within units of measurement as well as converting units of measurement. For example we can work within units of measurement where…
[latex]\Large1\text{ foot}=12\text{ inches}[/latex]
[latex]\Large\text{imperial }\rightarrow\text{ imperial}[/latex]
Or we can convert units of measurements such as the following…
[latex]\Large1\text{ foot}=0.304\text{ metres}[/latex]
[latex]\Large\text{imperial }\rightarrow\text{ metric}[/latex]
In the trades we may get used to a certain way of doing things but understanding the terminology behind systems of measurement can help us when we work at jobs where the language is different. Once again, what we are doing is expanding our math vocabulary to help us understand the language of math.
I’ll give you an example. When gas fitters learn about energy (or heat) calculations, they are given two numbers to work with. The imperial number is the British Thermal Units (BTU’s) while the metric version is kilowatts (kW). Students often have a tough time in the beginning getting the relationship right between the two. Their frustration builds and eventually they begin to wonder why they have to learn two different ways to say the same thing in the first place.
The answer lies in the fact that in the gas fitting trades, students will run across appliances that are designated in both BTU’s and kW’s. If they are unable to work between the two, then there could be serious safety consequences if those appliances receive too little or, more importantly, too much gas.
For reasons such as the one mentioned above, it’s important to know what the different units of measurement mean as well as how to work between them. I know from my experience as a trades instructor that once students begin to understand the language of measurement and are able to both visualize and apply this language, the concepts of math and measurement become a lot easier.
I think the first thing we should do at this point is go through the history of measurement and how the metric and imperial systems came to be.
A Brief History of Measurement: Metric and Imperial
The metric system
Have you ever heard of the guy on the right? Nope, me neither. His name is Nicolas de Condorcet, and he was a French mathematician, philosopher, and early political scientist. He lived way back in the 1700’s.
What does he have to do with measurements, you might ask? Well, Condorcet stated that the metric system was to be “for all people all the time.”
Back in those days there wasn’t a standard measuring system being used in France (