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IntroductionsTom.. A little bit about…
A bit about you…
background,how
you will be using this
interests
concerns
The Plan…
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Today’s Session- 2 hours
Introductions- 10 min.
Quick overview of Engineering Design and why it is important- 15 min.
A quick example of how you use this kind of thinking every day- 5 min.
Lab Activity- Balloon Powered Cars- 60 min.
Debrief/Sharing- 15 min.
Questions and additional activities-15 min.
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Today we will explore what engineers do and use the process they use to design things that make the world a
better place to live in
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Think about 3 things that are NOT normally engineered.
Quickly identify some things that are NOT engineered
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Did you think of these kind of things?
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All of our “Stuff” is Designed & Engineered
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What do Engineers Do?
They make “stuff” better- Innovate◦Compare the telephone or car of your
grandparents to today’s phone or car
They Invent new products◦Cell Phones, personal computers, X
box, the Mars lunar lander & battery powered tools were not around when I was your age
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How do they do it?Engineers most often work in
teams to bring different skills, perspectives and experiences to the table
Engineers today follow a flexible process that is similar to the Scientific Method
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Step 1
Identify the Need or Problem
Step 2Research the Need
or Problem
Step 3
Develop Possible Solution(s)
Step 4Select the Best
Possible Solution(s)
Step 5Construct a Prototype
Step 6Test and Evaluate
the Solution(s)
Step 7Communicate the
Solution(s)
Step 8Redesign
The Engineering Design ProcessA flexible structure used by engineers to guide them through problem
solvingFrom the state of Massachusetts… there are others!!!
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You already use this process to solve every day problems.
A quick and simple explanation using an everyday task… I’m hungry… what’s for dinner
A more technical problem … the connectors on a life vest don’t work after a couple of months
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Today
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Step 1: Define the Problem
Using only the materials provided, design and construct a balloon powered car that will travel at least 15 feet.
You may cut or reshape the materials
You must draw at least three alternative plans before starting construction
You do not need to use everything in the kit
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Step 2: Research• Investigate or study the materials
available• You must sketch three designs (no
materials until you have 3 drawings)
• Think about what you have seen on similar toys or structures (2, 3 or 4 wheels?), car bodies of craft sticks, cardboard or combo?
• Break it down into subsystems: power system, car body, wheel and axle
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Working as a team and listening to each other
We need to minimize resistance… to do that we need to reduce friction and weight
We need to consider aerodynamics (another form of resistance)
The wheels need to be able to turn
The wheels need to rotate parallel to each other
The air flow out of the balloon or balloons needs to be controlled
Keep it simple, we only have so much time to work with
Some Things to Think AboutWhat are the big issues in this
project?
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Step 3 & 4: Design &
Pick
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Step 5 & 6: Build & Test
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Step 7: Refine
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Step 8: Tell us about it (if
time allows))
What was your basic plan?What did you learn in the building and testing?
How would you improve your solution?
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To Review: Our Plan Today:
Think about the materials & problem Make Plans and Pick One to
Build
Build and Test Have fun EngineeringRedesign to Improve
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The Activity
Balloon Powered Cars: Design and construct a balloon powered car that will travel at least 15 feet. Each team of two or three will be given a kit of materials.
You may only use the materials in your kit to complete the design problem.
You can not start construction until you have 3 options drawn on your sheet
You may want to break the problem into systems… power, body, wheel & axle
There will be a selection of shared equipment available in front of the room. There will be cutters for the dowels and cardboard in the front of the room.
You have about 20 min. to build. Hint… test/fail early, test/fail often
We will have a sharing session when done if time allows
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Have fun…
…but first… groups of 2 or 3
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Planning… draw at least three possible plans. You have 10 minutes
Use timer link on the desktop
Building… build your first car and test it. Try to have one built in 20 minutes.
Redesign or Improve… keep redesigning, building and testing as time allows
Communication (as time allows)… How were you going to solve the problem at the beginning?
What worked and what did not work?
What would you do next if you had more time?
What did you learn in this activity?
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Contact Info:
Tom GralinskiClark Science Center, Smith CollegeNorthampton, MA 01063
413-585-3932