computational modeling with vpython - pedagogue...
TRANSCRIPT
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Computational Modeling
with VPython
Geoff SchmitNaperville North
High School
pedagoguepadawan.net
Friday, 4 October 2013
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What isComputational
Modeling?
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WolframAlpha
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Molecular Models
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Examples from Fermilab
•Monte Carlo simulations to predict frequency of decay products from other particles when looking for Higgs
• dark matter distribution throughout the Milky Way simulations
• design and tuning of 40-m long interferometer
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High-AltitudeBalloon Path
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Finite Element Analysis
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Politics
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Black Box Trading(Algo Trading)
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Rapunzel’s Hair
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More Than Programming
• computational thinking is• knowing when and how to use a
computer to solve a problem•mapping from the problem space to the
solutions space by creating an algorithm
• programming is just one part
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More Than Running Simulations
• not sufficient to develop computational thinking
• students need to modify, extend, and create their own computational models
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Why TeachComputational
Modeling?
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Increase Understanding
•multiple representations of concepts• verbal, mathematical, graphical,
diagrammatical, and computational
• reinforce key idea of models predicting the future and explaining the past
• encourages exploration (what if?)
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Authenticity
• enable students to explore more complex problems whose solutions are beyond the scope of their current course
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Next GenerationScience Standards
• Science and Engineering Practices• Analyzing and Interpreting Data• Using Mathematics and Computational
Thinking• Developing and Using Models
• refer to computational thinking and students using and creating computational models and simulations
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1-dMotionSimulation.py
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Projectile Motion Lab
• from a fixed elevated position, hit the buggy as it flees
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Projectile Motion Lab
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Projectile Motion Result
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Science OlympiadGravity Vehicle
• gravity-powered vehicle on a ramp rolls as fast as possible a specified (but unknown until that day) distance
• scoring based on accuracy, time, and minimizing height of ramp
• computational model used to verify calculation and explore impact of various distances
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Science OlympiadGravity Vehicle
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Gravity Vehicle Results
breaking distance (m): 9.4initial velocity (m/s): 2.4248711306final time (s): 4.372final cart position (m): <10, 0, 0>height score: 44.4444444444time score: 109.3total score (low score wins): 153.744444444
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Visualize
• energy transfers: massOnSpring.py
• position, velocity, acceleration relationships: shm.py
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Explore
• orbits: satellite.py, binary.py
• fluids: buoyancy.py
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Resources
• Georgia Tech PER Group• https://per.gatech.edu/wiki/doku.php?
id=projects:hscomp:physutil
• my GitHub• https://github.com/gcschmit/vpython-physics
• John Burk’s blog• https://quantumprogress.wordpress.com/
computational-modeling/
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Textbooks
• Matter and Interactions by Ruth Chabay and Bruce Sherwood• http://matterandinteractions.org
• Computational Physics by Mark Newman• http://www-personal.umich.edu/~mejn/cp/
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Alternative Computational Modeling Tools
• Open-Source Physics Easy Java Simulations (OSP EJS)
• Glowscript
• GeoGebra
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Papers
• Integrating Numerical Computation into the Modeling Instruction Curriculum• Caballero, Burk, et al.• http://arxiv.org/abs/1207.0844
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