Teaching Students How to Evaluate Calculation Results. James Hanson, Ph.D, PE Rose-Hulman Institute of Technology. ASEE Illinois-Indiana Section Conference March 27, 2009. Overview. Motivation How evaluation is done How to teach it Reinforcing it in HW How well it works.
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James Hanson, Ph.D, PE
Rose-Hulman Institute of Technology
ASEE Illinois-Indiana Section Conference
March 27, 2009
Categories of Evaluation Tools for Analysis Results
Circuit analysis governed by Ohm’s Law and Kirchoff’s Current Law
DC circuit with capacity approximated as open circuit
DC circuit with inductor approximated as a short
Features of the Answer:
Ripples in frequency response of filter relates to order of the filter
Thanks to Dr. Yoder, ECE Dept, RHIT
Def: Sequence of steps followed by a person to monitor and improve that person’s own cognitive performance in an area
How: Set up student so intuition leads to wrong conclusion, then ask to reflect on why went wrong
An indeterminate beam experiences uniformly distributed load.
Find vertical reactions.
a) Guess the deflected shape
Not graded based on correctness, graded based on whether done
b) Generate approximate solution
Assumption: load carried by nearest support
c) Use computer for solution
Can use as “black box” if teaching how to evaluate results
d) Identify expected features in computer solution
SFx = 0
SFy = 0
SM = 0
e) Verify fundamental principles in computer solution
f) Make comprehensive argument that computer results are reasonable
Features of Solution
g) Compare guess with solution and reflect on why similar/different
Graded based on candor and depth of reflection, not how similar or different