Walk It Out

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Walk It Out!

• Presented By
• Michael Liu and Phil Caggiano
• Houston ISD/Rice Model Lab
• mliu_at_houstonisd.org
• pcaggian_at_houstonisd.org

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Candid Calculator
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Candid Calculator

• Try to reproduce the four motion graphs as
  closely as possible with the graphing calculator
  and CBR. You may repeat the procedure as many
  times as you like until the graph on the
  calculator screen matches the graph in the lab.
• The graphing calculator and CBR are ready to use.
  However, additional instruction are also
  included.
• The CBR are accurate to only 15 meters. You will
  also need to walk slow because the CBR will be
  collecting data for 10 seconds. After each
  trial, press ENTER and then REPEAT SAMPLE

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Teaching Points

• Describe your motion used to create each graph.
• How are the motions that you used to create
  graphs 1 and 2 different? How do they correlate?
• Did anyone get perfect steps for graph number 4?
  How were you able to create this graph?

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Speed Racer!

• Here is another lab activity that you could do
  with your students.
• You will be walking and walking fast (students
  will have to walk, jog AND RUN) a set distance
  and calculating your speeds.
• Use your data to construct a graph to visually
  represent your speeds.

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Teaching Points

• How to read a stopwatch
• Rounding
• Division Strategies
• 1.) Cowboy and horse
• 2.) Circle
• Average Strategy circle, box
• Graphing Strategies
• 1.) Slope Rise over Run
• 2.) Best fit
• 3.) DRY MIX
• 4.) Distance / Time

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Division Strategies Cowboy Horse
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Division Strategies The Circle
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Slope Rise / Run
DRY DependentRespondingY-Axis
MIXManipulatedIndependentX-Axis
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Real World

• Now lets apply what we have learned in the last
  two activities. Read the following scenarios and
  answer the questions that follow.

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A MAD RUSH!

• Mr. Lius car had a flat tire. He is supposed to
  be at a friends house in 4 hours. His buddy
  lives 60 kilometers away. Good thing Mr. Liu
  still has his bike. So Mr. Liu gets on his bike
  and starts peddling
• Based on this graph, did Mr. Liu make it to his
  friend's house? Why or why not?
• What was Mr. Lius average speed on his bike?

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Riding the Rails

• Four trains leave the Wright City Station at the
  same time on their way to Ronville. After six
  hours, this is their progress.
• Based on the graph, which train is traveling the
  fastest? Justify your answer.

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An Eventful Commute

• This is a graph of Mr. Caggianos commute home
  from work on Tuesday. Give a reasonable
  explanation for line segment H and justify your
  answer.

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Road Trip!

• Create a story about a trip, real or imaginary,
  and then graphically represent your story on a
  distance/time graph. Your story should include
  the terms speed, slope, distance, time units
  of measure.

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Thanks!

• Our contact information
• Michael Liu and Phil Caggiano
• Houston ISD/Rice Model Lab
• mliu_at_houstonisd.org
• pcaggian_at_houstonisd.org