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An Introduction to Using Systems Thinking and STELLA in the Classroom. Presented by: Mark Clemente National Institute of Aerospace. Resources for this presentation. http://livebinders.com/edit?id=4349. - PowerPoint PPT Presentation
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An Introduction to Using Systems Thinking and STELLA in the Classroom
Presented by:Mark Clemente
National Institute of Aerospace
Resources for this presentation
http://livebinders.com/edit?id=4349
What is a system?
“A system is an interconnected set of elements that is coherently organized in a way that achieves something”
Donella H. Meadows, Thinking in Systems: A Primer (Chelsea Green Publishing, 2008) 11
Examples of Systems
Digestive Forest Community
Magic Spring Toy (aka Slinky™)
Bathtubs
A bathtub is a simple system
0
5
10
15
20
25
9AM
Water in Bathtub
Bathtub System
Draining
11:46 AM Fri, Feb 20, 2009
Water in bathtub
0.00 7.50 15.00 22.50 30.00Minutes
1:
1:
1:
0
15
30
1: Bathtub
1
1
1
1
Understanding Behavior Over Time
Dynamic Equilibrium
11:34 AM Fri, Feb 20, 2009
Water in bathtub
0.00 7.50 15.00 22.50 30.00Minutes
1:
1:
1:
24
25
26
1: Bathtub
1 1 1 1
Modeling Systems with STELLA
Stocks & Flows
The bathtub is a stock
Bathtub
Stocks & Flows
The faucet and the drain are flows
Bathtub
adding water draining water
Other Stocks & Flows
Same thing, different units
Bank Account
making deposits
C02 In
Atmosphere
adding c02Self Esteem
building
Feedback Loops
Balancing Loop
Room Temp
adding heatfrom furnace
thermostat setting
difference betweendesired and actual temp
Balancing Loops
0.00 15.00 30.00 45.00 60.00Time
1:
1:
1:
50
250
450
1: Population
1
1
11
Populationreproducing
birth rate
dying
death rate
Applying Systems Thinking in the Classroom
Use Systems Thinking Stock & flow Mapping Use Model-based Concepts Materials
Non-software-based Software-based
Earth Systems Science & STELLA
An example: GLOBE Carbon Cycle Program
• Bringing cutting edge research & techniques into the classroom
• STELLA models that use input data collected by students and researchers
• Focus on using technology & modeling to give students an understanding of local and global carbon cycles
Recommended