Engineering Design Lab: Day 3
Step 6: Test the prototype. Before students examined their
quarantine facilities, the teacher reviewed the engineering
design process and led a class discussion in which the students
developed shared criteria for evaluating the design solutions.
The teacher asked the students what they would consider a
“successful” design. (The teacher should guide students to the
idea that the quarantine facility is successful if the slime mold
is not able to escape the prototype facility.) Students then
obtained their Petri dishes and assessed whether they were suc-
cessful, based on their class’s definition of success. The students
then documented their qualitative observations in their individ-
ual design portfolios. Figure 6 shows one group’s prototype
right after the inoculation and then several days after the inoc-
ulation. The slime mold was not able to escape the quarantine,
and therefore, based on their class definition of success, the
prototype was successful.
Step 7: Present your solution. Students were then given ~30
minutes to work within their groups on their online design portfo-lio/presentation. They were instructed to compile their observations
and notes from their individual design portfolios. Groups then presented their designs to the class using their online portfolio. They
included pictures of their prototype and whether they were successful in quarantining the slime mold.
Table 1. Group presentation rubric.
Item Description Points Available
Title Page The first slide of the presentation should have a descriptive title for the
lab. Include your group members’ first and last names, period, and lab
Problem In your own words, summarize the problem that you are addressing. List
the design criteria and constraints that you must abide by in your design.
Background Research Write a brief introduction to slime mold as a living organism. What are
some of its characteristics? Describe briefly what you hope to find out.
Cite at least one reference source.
Possible and Best
Describe your group members’ possible design solutions, as well as the
solution that you chose. Provide a short justification for why you chose
Creating a Prototype Include a picture and description of your prototype. List the construction
materials that you used to build it and discuss any of the challenges that
you had in the construction process.
Test the Prototype Include a description of how you tested your design. Discuss the results of
your design. Was your design successful? Why or why not?
Presentation You will be assessed on your group’s overall presentation of your slime
mold quarantine facility and the results of your tests.
Figure 6. “Before” and “after” images of a group’s quarantine facility.