Guided-Inquiry Learning - Illinois State University
Transcript of Guided-Inquiry Learning - Illinois State University
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Guided-Inquiry Learning
in a Large-lecture Setting
Guang Jin, P.E., Sc.D.Tom Bierma, MBA, Ph.D.Environmental Health ProgramDepartment of Health Sciences
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The setting…HSC 156, Environmental Health in the
21st Century (80-200 students per class)
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The problem…Abstract concepts disengage students
Examples:Development of pesticide resistance Bioenergy
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Objective Increase student engagement,
learning autonomy, and understanding…
When presenting abstract concepts.
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Guided-Inquiry LearningEssentially the scientific process…
1. Recognize a problem, formulate a question.
2. Collect data
3. Examine data for patterns that help “discover” an answer to question.
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POGIL Process-oriented Guided-inquiry
Learning
Originated in chemistry education
Group process (downplayed in our work)
Guided-inquiry process
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POGIL
Premise…(supported by POGIL research)
Students are more engaged and have a better understanding when they are involved in inquiry and “discovery.”
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Clickers used to allow two-way communication.
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Pre-test modules on small group
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Module 1Development of pesticide resistance“How do pest populations become
resistant to pesticides?”
“What are the implications for farmers?”
“How might resistance be minimized?”
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Concepts to be “discovered.” Population resistance evolves from
population diversity and stresses from the environment (pesticides)
Rate of resistance development increases with pesticide application level.
Pesticide application only buys time, doesn’t solve problem.
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Part 1 - manipulatives Use pieces of paper to create a pest
population with diverse pesticide tolerances.
Eliminate the susceptible individuals.
Let the rest reproduce
What do you discover?
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Continuing….
Let’s assume you find two “pests” in your field. One has a “pesticide tolerance” of 30 and the other a
pesticide tolerance of 50. A pesticide tolerance of 30 means that a pest cannot
survive when pesticide is applied at a level of greater than 30
Use a small piece of paper to represent each of these pests. Write their pesticide tolerance on the paper.
5030
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Your pests evolution should look like…..
1st Gen.
2nd Gen.
3rd Gen.
5030
50 5545
50 55 6050 5545
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Part 2 – computer simulation
Computer simulates paper exercise but faster and on a larger scale.
Students can vote on simulation inputs using clickers.
Simulation output helps students see patterns.
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What new pesticide dose should we try?
10 30 70 95
10%
23%
33%33%1. 102. 303. 704. 95
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0
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Pesticide Tolerance (ave.)
No pesticide
Pesticide applied
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Generation
Pest Population
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Diff.
in P
est P
op. S
ize
Generation
Pest Damage Avoided
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Module 1IBioenergy“Can bioenergy contribute to solving
U.S. energy problems?”
“Can bioenergy contribute to solving global warming?”
“How can science help bioenergybecome practical?”
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Concepts to be “discovered.” Energy flows from sunlight, to chemical
energy in plants, to heat in an engine.
The energy molecules in plants can be altered to better suit our fuel needs.
Science can be used understand, evaluate, and improve bioenergy sources.
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Make biodiesel from waste fryer oil in class
What is waste fryer oil?
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Will it burn?
Will it work in a diesel engine?
Too viscous!
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How can we reduce it’s viscosity but preserve it’s fuel value?
Can we alter the molecule?
Carbon chains
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How can we tell if the product will have the right viscosity?
Can we do an experiment?
Biodiesel
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Viscositygiven these objects…
How could we test the viscosity of biodiesel?
How would we know if it flows well enough?
Pipette
Biodiesel Stop watch
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How can we tell if it burns well?
Can we do an experiment?
Biodiesel
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Results
Greater student engagement and attention.
Positive student feedback.
Slightly better performance on exam and quiz questions, although not statistically significant.
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Greater Engagement and Attention
more active discussion among students, more relevant questions raised during class, and more additional questions after class.
a dramatic decrease in distracted behavior and increase in attentive behavior.
Our teaching assistant Lucy Loftus doing class observations
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Positive Student FeedbackTable 1. Student response to pesticide module
Student Responses Questions (n = 242)
Better Understanding? More interesting?
strongly agree 18% 12%
agree 65% 60%
neutral 11% 21%
disagree 5% 7%
strongly disagree 1% 0%
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Positive Student FeedbackTable 2. Student response to bioenergy module
Student Responses Questions (n = 153)
More interesting? More interesting?
strongly agree 17% 26%
agree 59% 58%
neutral 17% 10%
disagree 4% 5%
strongly disagree 3% 1%
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Impact on Learning OutcomeTable 3. Comparison of student learning outcomes on relevant quiz and exam questions
Percentage correct
Traditional Class Guided-Inquiry p-value*
Quiz Performance 68.3% 70.7% 0.864
Exam
Performance
74.0% 75.6% 0.591
* t-test
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Conclusions
The guided-inquiry learning modules appear to be more effective than traditional teaching methods in engaging students.
Students also clearly enjoyed the activity more, and believed that it helped them understand the concepts better.
More enjoyable for the instructors!
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Conclusions
More time consuming, both in terms of creating the module and implementing it.
To use primarily when teaching complex or abstract concepts that students typically have trouble comprehending.