Case study 1 : Which package is more economical?

Case study 1:
There are two cans of 250ml drinks here. Which one uses less materials for packaging? Less materials means saving more resources and money.

a) Observe and vote for it in a poll in THE COURSE BLOG. (Deadline: 17th August 11:59p.m.)
b) Now design a new package with the least materials for the can. Go to the supermarket and measure the diameter and height of these two cans. Go home and do some calculations. Make some paper models at home and record the findings in a table provided. Do you notice the pattern? Which one uses the least materials? Post your table and conclusion in YOUR OWN BLOG. (Deadline: 23rd August 11:59p.m.)


c) Why do the soft-drink companies have different packages of the drinks with the same volume? Answer this question in YOUR OWN BLOG. (Deadline: 23rd August 11:59p.m.)