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New Case Study Developed at CEBC Uses Gas Mileage to Engage Students

Wednesday, December 16, 2009

In the recent “Cash for Clunkers” program, policy-makers wanted to boost car sales and reduce fuel consumption.  But, the average increase in fuel economy was relatively modest (a jump of 15 to 24 miles per gallon on average). Was this program worth it? 

At first glance, it would seem as though small gains in fuel efficiency would likely have little impact on fuel consumption.  This is because the “miles-per-gallon” rating is highly misleading.  People commonly think that for every increase in m.p.g., there should be an equal decrease in the amount of gas consumed in a certain distance.  But this is not the case. 

In fact, jumping from 10 to 20 mpg saves more gas than going from 20 to 40 mpg.  How is this possible?  As described by Richard Larrick and Jack Soll in a June 2008 article in Science, there is actually a non-linear relationship between gas consumption and fuel efficiency.   

Claudia Bode, Education Director at the Center for Environmentally Beneficial Catalysis (CEBC), read this article and shared it with high school science teachers who were doing research at CEBC. 

“I was so surprised by it,” said Bode.  “I just couldn’t believe that small improvements in the least fuel efficient vehicles could really make that much of a difference. We thought this would make a great lesson for students.”

Bode and two of the high school teachers, including Carolyn Pearson (left) and Alan Gleue (right) created a new case study based on this real-world issue.  The case and related teaching materials were peer-reviewed and published on the National Center for Case Study Teaching in Science website. 

Richard Larrick, co-author of the June 2008 Science article and a management professor at Duke University, discovered the case and has since posted it on his blog mpgillusion.com

“It’s very useful to have materials to help people learn this math so that they’ll do it automatically,” said Larrick.

“I have used this case study twice with my physics classes,” said Alan Gleue, Lawrence High School physics teacher and co-author of the case. “It really helps reinforce graphing and data analysis concepts.”

Reference:

Larrick and Soll, “The MPG Illusion, Science 20 June 2008: 1593-1594.



CEBC Calendar

September 13, Wednesday - Mandatory Lab Safety Meeting
All researchers at 1501 Wakarusa Dr. must attend

9:00 a.m. in Building B seminar room

September 19, Tuesday - CEBC Colloquium
Dr. David Sholl, Chair of Georgia Tech School of Chemical & Biomolecular Engineering
"New Nanoporous Materials for Practical Applications Using Computation Modeling - How Close Is the Dream to Reality?"

9:00 a.m. - 10:00 a.m., 1501 Wakarusa Drive, Building B seminar room
10:00 a.m. discussion with students

October 16 & 17, Monday & Tuesday - CEBC Fall Industry Advisory Board Meeting
Registration is Open - click here!

Monday 12:00-7:30 p.m. at the Adams Alumni Center, 1266 Oread Avenue, Lawrence
Tuesday 8:30-noon at the CEBC Complex, 1501 Wakarusa Drive, Lawrence

November 7, Tuesday - CEBC Industry Colloquium
Dr. Brandon Emme, Cellulose Team Leader, ICM, Inc.
"Title TBA"

9:00 a.m. - 10:00 a.m., 1501 Wakarusa Drive, Building B seminar room
10:00 a.m. discussion with students

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