Science and Engineering go hand in hand. In Science we ask questions we want to answer like, “Why is the sky blue?” Engineering works to create solutions for problems or improve on existing solutions. Just like Scientists use a process of experiments, Engineers use a process for problem solving. This process is called the Engineering Loop. 

Not every process is exactly the same, but below is an example of an Engineering Loop: 

You will be using a similar process to design your hot/cold pack. Here is a short video that will explain the steps of the Engineering Design Loop.