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Student Sample: Soda Can Designs. Class: EDSC304 Instructor: Professor Crocco Student: Thanh Diep. Student Sample: Project—Explaining Soda Can Designs.
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Student Sample: Soda Can Designs Class: EDSC304 Instructor: Professor Crocco Student: Thanh Diep
Student Sample: Project—Explaining Soda Can Designs • In this student sample project, student A demonstrates his/her knowledge in solving optimization problems, that he/she has learned in the class, to explain the soda can designs. • Format: the project format is of a story-telling– a conversation between student A and student B. • The project purpose is to answer the curriculum-framing question: “How can calculus be applied in the real world.”
What is the size of a soda can? • Student A asks student B: Do you know what the size of a soda can is? • Student B: Yes, its diameter is 6cm and its height is 12cm.
Why the height is twice the diameter? • Student A: Then do you know why the height of the soda can is twice the diameter of the can? • Student B: I don’t know why but I think it is for reducing the cost of making the cans. • Student A: When the height is twice the diameter, we can make the can with smallest amount of material because that is when the total surface area of the can is smallest. • Student B: Really! Can you prove it? • Student A: Yes, let me show you the proof by doing the math.
Student A: I also know how to plot a function using computer-aided software such as Matlab. You can see from the plot below, the surface area of a soda can has a smallest value when the height of the can is equal to the diameter of the can. My 21st Century Skill
Mini-Soda Cans Have Smallest Surface Area • Student B: So mini-soda-can dimensions have smallest surface area, but why the diameter is 6 cm and the height is twice? • Student A: The diameter is chosen to be 6 cm because it fits in most people’s hands. And if we make only mini-soda cans of the size 6 cm by 6 cm, they are too small for the average person. • Student A continues: so we come up with an innovative solution. We pack two mini-soda cans into one regular-size can and this method helps reduce the surface area further as shown on the next page.
Regular-Size Soda Cans Reduce Surface Area Further Student A: That is why a soda can isthe size of 6 cm by 12 cm for which the height is twice the diameter.
Other Brands are the Same Size • Student B: It’s an amazing story. Now I happen to realize that all the soda cans have the same size; and the height is twice the diameter!
Final Thoughts and Conclusions • Student B: I can’t believe that even in a soda can, calculus has been applied. • Student A: So what is your final thought? • Student B: I’ll take calculus next semester! • Student A: Here are some online free calculus lectures. • Conclusions: In this sample project, student A has: • made connection between his/her unit knowledge in finding minimum values of a function with the real world soda can designs. • demonstrated his/her 21st century skill by using computer-aided software to plot functions. • demonstrated his/her knowledge of the unit by using first and second derivative tests to find minimum values of a function when explaining the soda can design.