Math has always been a big part of my life, but looking back on it, it was probably only because I excelled in it. In the working world, most of my jobs involved math, especially as an accountant. It was during my last job that I really noticed just how much basic math and algebra I was using on a daily basis.
One use of algebra sticks out in my mind the most. At the time I needed to find the base cost of a contract, before fee was applied, and was given the fee percentage and the net contract amount. After working on it on paper, I came up with the equation:
(gross contract amount) x (fee) = (final contract amount)
1.065X = 1,523,000
*I divided both sides by 1.065
X = 1,430,047 where X is the cost before fee
Fee = 6.5%
Final contract amount = 1,523,000
I use this knowledge in many ways for things in my post-accountant life. For example, if there is an item that is $15 after tax, I can find the cost before tax.
It was just last week when my mom and I had a conversation about how some people’s lack of math knowledge makes them less efficient in many everyday tasks. This conversation stemmed from a trip to a store, where the computers were down and they had to figure out prices without the help of their computer. I had heard the cashier tell the customer in front of me that the tax rate was 9.9%. In an effort to help out the somewhat stressed looking cashier, I quickly found out the total of my purchase by taking my total purchase and multiplying it by 1.099, giving me the grand total for the sale (I did use the help of a calculator function on my phone). Here is my equation:
5.98 (I did this math in my head because I had two items, one was $1.98 and the other was $4.00)
5.98 x 1.099 = 6.57202
Though I thought I was helping out, the cashier still decided to find the total on his own. He pulled out a calculator and did the following:
1 + 4.98 = 5.98
5.98 x 9.9 % (used the percentage button) = 0.59202 (wrote down 0.59)
1 + 4.98 + 0.59 = 6.57
Sure, he got to the same answer as I did, but it pained me to see all of the unnecessary steps that he had to take to get to the final answer. The most surprising point was that he had to add the two items up to get 5.98. This is a prime example of why I want to become a math teacher.
There are so many other ways in which math is present in everyday life. I know that I use math when following a recipe, but changing the serving size. I also use math to figure out how many miles per gallon I am getting on a tank of gas by taking the total number of miles driven on that tank and dividing it by the number of gallons it took to fill up. Math is also needed to figure out how to give change to a customer, and also in counting it back (which is an increasingly foreign concept).
Throughout my time in the teaching program, knowing that my end goal is to become a middle school math teacher, I have been thinking up ways to engage students and make them realize that math is relevant and will actually be used in their life. It seems like so many students lose interest in school because they don’t believe they will need to use it after they have completed school. This is simply not true, so I would like to have students tie in math to their world. One way I have thought about doing this, is to have students find articles on math, think of ways that they use it in everyday, then have class discussion based upon the students’ findings bi-monthly.
My mind was running on overdrive, as I was driving, thinking about all of the school stuff that I had to compete, but specifically about how I use math in everyday situation. For a split second, my mind followed a song on the radio and I happed to hear the following lyrics from a new song by Rihanna and Drake, called “What’s My Name”:
The square root of 69 is 8 somethin’, right?
‘Cause I’ve been tryin’ to work it out, oh
As soon as I heard these lyrics I started laughing, just realizing just how much that math IS all around us.