arnan (roger) sipitakiat chiang mai university, thailand using computational thinking as means for...
TRANSCRIPT
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Arnan (Roger) SipitakiatChiang Mai University, Thailand
Using Computational Thinking
as Means for Human Comprehension
OLPC Regional WorkshopJuly 28, 2008
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An Example of Computation in Learning
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http://www.e-cpe.org/olpc/chaba.jpg
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Method I: Calculus
2
22
1
22 )(
v
axc
v
xbT
T
x
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Method II: Computational
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Human Comprehension
Earth
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2 . Pi . (r1-r2)
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Balance Control
Angular Sensor
Linear Sensor
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Children experiencing and thinking about balance control situations.
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Simple IF-THEN Rules
If angle < 0 [ setpower 8] If angle > 0 [ setpower -8]
Angle < 0 Angle > 0
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Students’ Observations
Car was moving too slowly
Car was too “bouncy”
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If angle > 10 and angle < 15 [ setpower 6]If angle > 5 and angle < 10 [ setpower 4]If angle > 0 and angle < 5 [ setpower 2]
If angle > -15 and angle < -10 [ setpower -6]If angle > -10 and angle < -5 [ setpower -4]If angle > -5 and angle < 0 [ setpower -2]
IF-THEN Rules with Gradient
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Introducing the idea of
Anticipation
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Observing Body Motion
?
Does this ever happen?
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Observing Body Motion
1. Observing live actions
2. Reviewing recorded videos
3. Reviewing recorded sensor data
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Car Speed (Red) Pendulum’s Angle (Yellow)
0
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When giving a solution is insufficient
Need time and space to negotiate meaning themselves
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Top Tip Regulation
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Descriptions on Paper
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Balance Beam
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Spiral Helix Ring
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On-orbit Reaction Control System (RCS)
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Phase-Plane Controller
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Comparison
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Conclusions
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THANK YOU