# 1.1 Everyone Uses Math

Math is the basis of many things we do or use every day. We need it in jobs or business, and have to understand mathematical concepts to excel in certain aspects of our lives. In the short videos below you will meet people who use math in their work every day.

Media Production Specialist

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## Math on the Job

I use math on the job every day. For instance, when I go out on a video shoot there are two things we look at on the camera; one is the F-stop, the other is the focus. F-stop is a measurement of how much light you are allowing to go into camera. So for example; if you are in a really brightly lit area, day lit area, you’re going to close down your F-stop to an F16. When you’re in a really dimly lit area, or a dark room, you’re going open up your camera iris to a 1.8 or 2.4.

Another way we use math out on a video shoot is when we are focusing the camera. Um, subject for instance might be ten feet away, well you’re going to check your focus rein and make sure it was set for ten feet, so at ten feet your subject will be in focus.

We also use math back in the editing room. When we are capturing video we will capture it at different aspects ratios depending on what our project calls for. Sometimes we will use a 16×9 aspect ratio gives you a wide screen shoot, or we will use a 4×3 or standard depth ratio. Another way we use math in video editing is when we are working with time code. Time code is both a measurement of time but also shows us things like frames per second. Most video is shot at 30 frames per second, and then this will transition back when we go back into video editing. In a sense that If you are trying to create a transition, like a cross fade or a dissolve, you’re going to what to adjust that depending on the mood that you’re trying to create. Sometimes you want a really long transition, so that might be, I don’t know, 60 frames, so it would be about two seconds long. Sometimes you’re going to want something that is a lot quicker and that might be 15 frames, but you have to do that and kind of gage it with what your project is.

And those are a couple of different ways we use math here when we are going video production on the job.

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Potter

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Firefighter

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Did you realize that these professions involve so much math? You can probably think of many more math applications on the job besides the ones you have just seen. So keep in mind that most professionals are in need of some mathematical skills to perform their job.

And this does not even include the professions that usually come to mind when we talk about jobs heavily based on mathematics—engineers, computer programmers, architects, statisticians, and many more.

Thinking about where math is used in the real world may help motivate you to start your mathematical journey as well.

1.0.1 What to Expect in this Unit

1.1.1 Math Notebook