I did a similar egg drop project in high school and I thought it would be easy to "re-do" the project in Prof K's exercise. However, this time I was doing it with a team of people and there were many limitations. These factors made this exercise more difficult than it seemed.
First, Prof K posted the goals and objectives of this exercise on the projector. So we all knew that we had 20 minutes to plan how to make a protector for the egg with 8 straws, 2 feet of tape, and 1 pair of scissor shared among all groups, and 10 minutes to execute the plan. The egg also had to be 50% visible.
Then we proceed to Step 2 in "Planning Process," which we all knew the materials given to make the protector, but we didn't know the actual length and size of the straws, and size of the egg. I also told my group that I had done this before, then we went straight onto developing strategies.
In the 3rd Step, we came up with 3 alternative strategies. The first idea was to attach the tape with the egg so that when we release the egg it would be dropping from a shorter height than it suppose to be. But we figured out the tape was not long enough to make this plan workable. The second idea was to make a cushion-like protector to protect the bottom of the egg while the top is still 50% visible. However, the egg would break if the top hits the floor first, therefore there was a risk factor. My idea was to wrap around the egg with straws in different directions, vertically, horizontally, and diagonally. Therefore the egg would become a pointy ball. We were concerned about the 50% visible rule in this idea, since we didn't know the actual thickness of the straw. In Step 4, we decided to go with the cushion-like protector. We didn't assign any specific jobs and roles though. We waited until actual implementation of the plan to see the materials and decide from there.
Finally we got the egg, straws and tape, but not the scissor. The straws were thinner and weaker than we expected. We decided to fold the straws in half and make a nest-like cushion and put the egg on top of it. We also figured out we could put some straws on the top of the egg, just for in case the top hits the floor. So one person held the egg and we all helped him out by bending the straws and passing the tape to him. At the end we successful made a strong V-shape protector for the bottom and a few straws for the top.
Sadly, our egg broke, even though I thought the protector we made was pretty good. The main problem I figured out was that the sides were not protected. The egg was way weaker than it seemed, and very little force was needed to crack its shell. Even if the bottom of the egg hit the floor first, it would bounce to the side and break the shell. It would be more effective if we planned to wrap around the sides with V shaped straws, instead of just focusing on the top and bottom. In overall performance, I still think we did a good job in this exercise. We just didn't aware/had no knowledge of the weakness of the side of the egg. Besides that, we worked as a team, shared our ideas, and engaged in this activity.
Sunday, March 14, 2010
Subscribe to:
Post Comments (Atom)
yea it was tough, I thought of that idea too, using V shapes. but the straws weren't long enough to do that.
ReplyDeleteAlthough your idea did not work, I really like that you guys came up with different strategies to make a successful egg drop, which was something that my group did not do.
ReplyDeleteSadly, my group's egg aslo break. because we can not make it in the limited time.
ReplyDelete