Background Information for Teachers
This section contains a quick review for teachers of the science and concepts covered in this lesson.
You probably remember making paper airplanes as a kid, and some of your students might be obsessed with making them now. While they might seem like a waste of paper or a distraction in your classroom, paper airplanes are an excellent way to teach your students about the engineering design process. You might think of the engineering design process as primarily about designing, iterating, and testing multiple prototypes of some device or machine. However, before you even start to design, you need to define the problem you are trying to solve, the criteria for success, and the constraints you face when solving the problem. Otherwise, you might design something that "works," but find out that it does not meet some specific goals, is too expensive, requires materials that are not readily available, etc. To avoid wasted effort, it is very important to sort those things out beforehand!
Think about real planes for a minute. They come in all shapes and sizes (Figure 1), and serve very different purposes. Before they can begin to design these planes, engineers have to define the problem they are trying to solve and the criteria/constraints they have to work with. For example, who is the customer for the plane? What will the plane be used for? How fast does the plane need to go? Why does this problem require a new type of plane? What is the budget and what materials are available to build it? The answers to those questions lead engineers to design very different planes. For example, look at Figure 1 and imagine what the customer for the plane might have wanted in each scenario (a big plane that can carry a lot of passengers and their luggage; a fast, agile plane that can shoot down other planes; and a tiny plane for just a few passengers).
Figure 1. Three different types of planes. From left to right: a large passenger plane (Boeing 747), a fighter jet (Lockheed Martin F-22 Raptor), and a single-engine passenger plane (Cessna 172).
In this lesson plan, you will be the "customer" who wants to purchase a paper airplane. Your students will form teams of "engineers" that will design and build paper airplanes. Before they start building anything, they need to first define the engineering problem that they will solve. What does the customer want the airplane to do (for example, the plane that can fly the farthest)? What constraints do they have to work with (for example, what materials are available, and how much time do they have)? How will they determine if their plane is "successful" and meets all criteria? While your students will still build and test planes, this lesson will focus primarily on these beginning stages of the engineering design process. See the variations section for ideas about how you can include other steps of the process in more detail.
Prep Work (5 minutes)
Make the "stunt plane" from the paper airplane instructions document and practice throwing it. This plane should be very difficult to throw straight—it will almost always do loops or spirals.
If necessary, rearrange furniture in your classroom so your students have a straight, open area to throw planes. If you do not have enough room in your classroom, you will have to do this activity in a hallway or bigger room.
There are also plenty of videos about how to make paper airplanes on YouTube.