1. APPLICATION Engineering Design Process Define the Problem Research and Explore – Research issues you’ll need to understand to solve the problem. List these research items and where you’ll find information. – Explore ideas - Brainstorm multiple solutions Choose the Best Solution Specify Criteria (requirements) and Constraints (limits) – Example, “So, your challenge would be to find out how to meet the criteria (requirement) of receiving good grades under the given time constraints.” – Example: “What were the criteria used to pick a winner?”

2. Example: You decide you want to build your dock right in front of a public park, and the waterway has endangered salmon in it. What are some of the constraints (other than cost) that may affect your project? Phrase it: “__________________ would be a constraint. This is a limitation on the project because____________.”Constraints

3. Engineering Design Process Build a Model Test Evaluate Success, Trade-offs and Unintended Consequences, – evaluate success: Was your design successful in meeting the criteria given the limits? – Example: “The car passengers survived even though the car crashed. The air bags and crumple-zone bumper worked!” – Trade-offs: something acceptable but not ideal – Example: “The car passengers are very bruised from the air bags but they lived!” – Unintended consequences: a situation you did not anticipate resulting from your design/solution – Example: “Cars must be sent to the junk yard once all safety features have been activated.” Redesign to optimize

4. Today’s Agenda Crash test dummy clips https://www.youtube.com/watch?v=zS_Gk7vj mOg https://www.youtube.com/watch?v=zS_Gk7vj mOg https://www.youtube.com/watch?v=ht662- 2zOW8 https://www.youtube.com/watch?v=ht662- 2zOW8 Intro Egg Drop

5. Egg Drop Using the Engineering Design Process 1. Problem: – Design a container that will keep an egg from breaking when dropped from the school roof. 2. Criteria and Constraints: Teachers – The container must be as low in mass and as small in size as possible – Egg will be provided day of the drop – No parachutes, propellers, or gliders, Helium balloons… – No glass or anything dangerous – No motors or engines of any kind – The egg must be returned in original condition for points

6. 3. Research the problem : describe any scientific information needed to solve the problem and how to collect the information 4. Explore Ideas : Describe several possible solutions to the problem, including any useful scientific concepts. 5. Circle your best solution. 6. Draw and label a diagram of your container (separate sheet of paper). Include scientific concepts for how this will protect the egg.

7. Point Values for Container Size: – 10 cm X 10 cm = 10 points – 20 cm X 20 cm = 7 points – 30 cm X 30 cm = 4 points – Larger = 1 point Mass – Egg mass = 45 g. – Less than 300 g container = 10 points – 300 - 449 g container = 7 points – 450 - 599 g container = 4 points – 600 or larger = 1 point Did it Survive the Drop? 5 points Did it NOT survive round 1 but did survive round 2? 3 points Did not survive either drop 0 points

8. Due Friday 9/28: Number 1-6 on design sheet Due Monday 9/29: YOUR CONTAINER!!! You will fail if you do not bring something that is well though out! Due Tuesday 9/30 Your redesigned container Due Wednesday: Analysis (8 pts.) – Constraints: identify TWO constraints of your solution and how it was a limitation for you during the project. – Unintended consequences: Describe one unintended consequence of your chosen solution. – How did you redesign to optimize your design?

9. Total Project = 50 points Research, design, analysis Lab paper, container, survival