Circulation and Temperature Preservation

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Circulation andTemperature Preservation

• An introduction to Module Two

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What you will need

• For this morning
• Red and blue map colors
• Adding Machine Tape
• Meter Stick
• Pencil
• Spaghetti
• Graph Paper
• Calculator

• For your class with your students
• Blood Pressure Sensor
• Scalar ProScope
• Computer
• Vernier Lab Pro

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Vocabulary LessonFind your mate

• From each of the containers choose one slip of
  paper
• Do not move until instructed
• You now have 1 minute to find your mates

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Making the Math Connections!
What is a scatterplot?

• A graph that shows a relationship between two
  sets of data
• The pattern of points can reveal a correlation
  or relationship between the data points
• You can use scatterplots to make predictions

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Creating a Scatterplot
Test Scores vs Headstand Time

• Every scatterplot should be titled
• Label the x and y axis of the graph
• Create a t chart of the values before plotting

Headstand in seconds
Test Scores
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Positive Correlation

• Both sets of data increase together
• Also referred to as an increasing-increasing
  function
• This data forms a positive trend.

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Negative Correlation

• One set of data increases and the other set of
  data decreases
• Also referred to as an increasing-decreasing
  function
• This set of data is said to have a negative trend

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No correlation

• It is possible for two sets of data to have no
  relationship
• No distinctive pattern can be seen

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Trend Lines or Lines of Best Fit

• Draw a line that passes close or between most of
  the points
• This line is called the line of best fit or trend
  line
• If most of the data points are close to the line,
  the correlation is strong
• If not, the correlation is weak

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Outliers

• Points that are significantly different from the
  other data points
• The data point in red would represent an outlier
• We discount the outliers when determining trend
  lines

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Body Measures and Scatterplots

• Find a partner
• Cut separate lengths of adding machine tape to
  the body measures as follows
• Height Label
• Arm Span each strip
• Circumference of Head students name
• Length of foot and
• Length of forearm what it measures

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Interpreting the Data

• Compile a class chart listing the corresponding
  measure with each data type
• Create a scatterplot using two measures of data
• Example height to arm span (arm span, height)
• Is there a pattern?
• Does there appear to be a correlation?
• Use spaghetti to approximate the trend line

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Graphing Technology

• Each set of data points consists of an x and a
  y variable or an ordered pair
• The x variable is plotted horizontally and is
  the first point in the set
• The y variable is plotted vertically and is the
  second point in the set
• On the calculator L1 is the x variable and L2
  v variable
• TI-84 press STAT enter input the x data in L1
  then using the arrow key move over to L2 input
  the v data
• Press Graph to see the scatterplot, if it does
  not show check your window

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Graphing Line of Best Fit(linear regression)

• TI-84 Stat use arrow key to CALC
• Press 4 LinReg (axb)
• Press 2nd 1 for L1 followed by a comma
• Press 2nd 2 for L2 followed by a comma
• Press VARS use arrow key to Y-VARS press enter
  1Y1 press enter
• Press enter LinReg yaxb
• Press graph for the line of best fit

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Circulation and Temperature Preservation
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Science ExplorationVocabulary

• Circulatory system
• Coronary circulation
• Pulmonary circulation
• Systemic Circulation
• Blood Pressure
• Systolic
• Diastolic
• Atria
• Artery
• Vein
• Ventricles

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Engage with Water Balloons

• Demonstration of arteries, veins and capillaries
• Fill balloon with water
• Pinch the neck and apply pressure
• Predict what happens as the opening narrows
• Narrower the opening more force
• Relate to blood pressure

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Engaging Blood Pressure with bottles!

• Use 3 sizes of nails
• Students hammer each nail through a lid
• Fill bottles with water
• OUTSIDE! Students apply pressure to the bottle
  mimicking the pumping of the heart
• Students predict the distance the water travels
• Which travels farthest?
• Why?
• What variables could cause changes?

OOPS! Wrong kind of bottle!
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Circulatory System

• Blood moves oxygen and nutrients to cells and
  carries carbon dioxide and other wastes away from
  cells
• The largest organ in this system is the heart

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The Heart

• Heart has 4 chambers
• Upper chambers
• right and left atria
• Lower chambers
• right and left ventricles
• During one heartbeat, both atria contract
• Then, both ventricles contract

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Pulmonary Circulation

• The flow of blood through the heart to the lungs
  and back to the heart
• Returning blood enters right side of heart and
  pumped out to lungs contains cellular wastes
  including CO2
• The blood returns to the left side of the heart
  with oxygen-rich blood and is pumped out through
  the aorta, the largest artery in your body

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Pulmonary Circulation

• The flow of blood through the heart to the lungs
  and back to the heart
• Returning blood enters right side of heart and
  pumped out to lungs contains cellular wastes
  including CO2
• The blood returns to the left side of the heart
  with oxygen-rich blood and is pumped out through
  the aorta, the largest artery in your body

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Arteries and Veins

• Veins carry deoxygenated blood back to the heart
• Arteries carry oxygenated blood away from the
  heart

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Blood Pressure

• The force of the blood on the walls of the blood
  vessels
• The pressure is highest in arteries and lowest in
  veins
• Pulse, waves of the pressure
• Rise and fall with heartbeat
• Normal resting pulse rates are 60-100 hpb for
  adults and 80-100 hpm for children
• Measured in large arteries

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Blood Pressure

• Expressed by two numbers, 120/80
• Systolic pressure
• First number
• Ventricles contract
• Diastolic pressure
• Second number
• Ventricles fill and contract

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Homeostasis

• Maintaining a balance
• Body tries to keep blood pressure normal
• Special nerve cells in the walls of some arteries
  sense changes in blood pressure
• When blood pressure is higher or lower than
  normal, messages are sent to the brain
• Brain raises or lowers blood pressure by
  increasing/decreasing heart rate

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A Fishy Tale

• See Pam Braswell
• Make sure you pay attention
• The Scalar Proscope is really cool
• You have to eat all the fish your campers kill!

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Good Luck!