Let's Talk About it - Giraffes
Hello and welcome to the last AP (Action Project) for my class, Population. In this unit we have been studying different sequences like alternating, arithmetic, Fibonacci, alphabetical, and so on. We have also been learning about limits, symbiotic relationships, and the equations attached to arithmetic and geometric sequences. For this AP we were asked to look at humans symbiotic relationship with our animal of choice. I decided to stick with the Giraffe which I have worked with on my first AP and second AP for this class. If you know close to nothing about giraffes I recommend you go through my previous APs to learn more about them!
Now here is my video!
I want to talk about the math a little more now since I couldn't fit it in my video. To calculate the population growth I had to find some sources that gave me tangible numbers. For the giraffes I found 2 points in their sequence I could use to calculate the sequence equation. Thank you to USA Today for the data, they are also cited below if you want to see the article! The two points are 1985 population of 157,000, and 2015 population of 97,562. From looking at the numbers I assumed it was a geometric sequence so I filled in the blanks, along with the help of my teacher, using the calculations we used in class:
gn=g1 (r)(n-1)
gn=157,000(r)(n-1)
30√97,562/157,000=r
r=(79,562/157,000)1/30
r= 0.98428 or roughly 1.5%
Calculating the human growth was much easier as worldmeters.info had the percentage growth for every year of the human population. So I just added all 30 percentages from 1985 to 2015, divided it by 30 and got the average percentage which was about 1.56%.
Thank you so much for sticking through with me on my adventure with giraffes! I had a lot of fun doing this, even though I was very upset looking at the population of giraffes dwindling. If I were to do this project again I would maybe have gone full animation with my video since I was too crunched on time to do so.
Citations:
Now here is my video!
Let's Talk About It - Giraffes from GGS on Vimeo.
gn=g
gn=157,000(r)(n-1)
30√97,562/157,000=r
r=(79,562/157,000)1/30
r= 0.98428 or roughly 1.5%
Calculating the human growth was much easier as worldmeters.info had the percentage growth for every year of the human population. So I just added all 30 percentages from 1985 to 2015, divided it by 30 and got the average percentage which was about 1.56%.
Thank you so much for sticking through with me on my adventure with giraffes! I had a lot of fun doing this, even though I was very upset looking at the population of giraffes dwindling. If I were to do this project again I would maybe have gone full animation with my video since I was too crunched on time to do so.
Citations:
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