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# 12.11: Resource Pages

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## Engineering Design Process Steps

(Use during "Engineering Design Process Activity")

Teacher instructions: Print the following on cardstock, 1 sheet per team of students (2-4 students per team). Cut out each step and place in an envelope or clasp together. Laminate to reuse.

## Steps of the Engineering Design Process

From the Massachusetts Science and Technology/Engineering Curriculum Framework

1. Identify the need or problem.

2. Research the need or problem.

• Examine current state of the issue and current solutions.
• Explore other options via the internet, library, interviews, etc.

3. Develop possible solution(s).

• Brainstorm possible solutions.
• Draw on mathematics and science.
• Articulate the possible solutions in two and three dimensions.
• Refine the possible solutions.

4. Select the best possible solution(s).

• Determine which solution(s) best meet(s) the original requirements.

5. Construct a prototype.

• Model the selected solution(s) in two and three dimensions.

6. Test and evaluate the solution(s).

• Does it work?
• Does it meet the original design constraints?

7. Communicate the solution(s).

• Make an engineering presentation that includes a discussion of how the solution(s) best meet(s) the needs of the initial problem, opportunity, or need.
• Discuss societal impact and tradeoffs of the solution(s).

8. Redesign

• Overhaul the solution(s) based on information gathered during the tests and presentation.

## A Visual Representation of the Engineering Design Process

From the Massachusetts Science and Technology/Engineering Curriculum Framework

## ANOTHER Visual Representation of the Engineering Design Process

From the Tufts University "Girls Get Set for Life" Website

## EDW: Engineering Design Worksheet

Team Name:

Project Engineers:

Job Title:

1. The problem/need:

$\\$

2. Design criteria and goals:

$\\$

3. Research:

$\\$

4. Possible solutions:

• Brainstorm possible solutions
• Draw on mathematics and science
• Articulate the possible solutions in two and three dimensions
• Refine the possible solutions

$\\$

5. Select the best possible solution

$\\$

The following steps will be completed when iRobot approves a possible solution as feasible.

6. Construct a prototype

7. Test and evaluate the solution

• does it work?
• does it meet the original design constraints?

8. Communicate the solution(s)

• Make an engineering presentation that includes a discussion of how the solution(s) best meet(s) the needs of the initial problem, opportunity, or need
• Discuss societal impact and tradeoffs of the solution(s)

9. Redesign

• Overhaul the solution(s) based on information gathered during the tests and presentation

ROBOTICS UNIVERSITY

ENGINEERING DESIGN CHALLENGE MEMORANDUM

TO: ROOMBA ENGINEERING DESIGN CHALLENGE TEAMS

FROM: ROBOTICS UNIVERSITY

SUBJECT: ROOMBA REDESIGN CRITERIA AND GOALS

DATE: 5/8/2012

CC: VICE PRESIDENT OF COMPETITIONS

ROOMBA REDESIGN CHALLENGE

Robotics University has put together a competition to engage students in design optimization and the use of modeling and simulation to find the best design.

Your challenge is to design a Roomba that will clean a room in the shortest time possible.

The goals of this challenge are strictly academic, and do not in any way reflect the performance characteristics of iRobot’s Roomba or quality of its design.

We look forward to your submission!

## ROR: Roomba Observation Report

Describe what you see the Roomba doing as it vacuums the room.

$\\\\\\$

Draw the path the Roomba takes as it vacuums a room.

$\\\\\\$

What type of path does the Roomba take (straight, curved, zigzag, etc.)?

Does the Roomba cross its own path or navigate so it only passes over an area of floor once?

What does the Roomba do when it encounters a wall/boundary?

Does its speed vary?

How long does it take for the Roomba to "circle"?

$\\\\\\$

Alternate setup for this document can be found on the following link:

$\\\\\\$

## Roomba Simulator

This is a screen shot of the Excel Simulator for the Roomba project. The blue squares in the middle represent the $18^{\prime\prime}$ squares seen in the video. The green square are for noting when the Roomba approaches the edge of the grid and stops to change direction. This (as observed) will lead to an increase in time as the Roomba stops and changes direction. For students to do observations, print out a blank copy of the simulator with the zeroes removed to track the path of the Roomba.

## STSP: Simple Traveling Salesman Problem

Map out as many different paths as you can so that you travel through each point only once (do not return to your starting point). Measure the length between each point and calculate the total length of the path. Label the distance between each set of points along the line that you draw. Then calculate the total distance of each complete path and record it in the space provided.

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## Date Created:

Jul 27, 2012

Apr 29, 2014
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