OBJ: Given college level lab SWBAT explain the relationship between pulse rate and heart beat and physical activity with 70% accuracy.

DN: HW check- Respiratory System Booklet; Review lab procedures and graphing

ACT: Work on lab write-up (data/results & graphing)

HW: Complete lab write-up (due tomorrow); Work on CRE Review Sheets; CRE EXAM, this Monday, March 9; INERH Exam, March 20.

MATERIALS

• You / yourself

• Timer (classroom clock)

Remember:Pulse: expansion and relaxation of the

artery wall

Pulse Rate ~ Heart Beat ~ Physical Activity

PROCEDUREPulse Rate = beats per minute (b/min)1. Measure your pulse rate at rest for one minute using a timer (stopwatch, classroom clock). Record Results2. Measure your pulse rate after walking for one minute. Record Results.3. Measure your pulse rate after running in place for one minute. Record Results.4. Measure your pulse rate after running in place for three minutes. Record Results.

GRAPHING• Plot your data on a graph using a bar

graph format• Label axes and units.

GRAPHING QUESTIONS:1. What is the relationship between pulse rate (beats/minute) and physical activity level (low vs. high)?

2. What is the relationship between pulse rate and heart beat (slow vs. fast)?

CONCLUSIONNOTE: You can improve the accuracy of your pulse

measurements by repeating the activities

several times and averaging the results. This would correct for human (measurement) error that may occur during the experiment.

Answer conclusion questions 2-5.

Hand-in college style lab write-up.

Grading (Total: 20 pts; (x5):TPHMP (5), Data Table (1), Graphing Questions (2),Graphing (3), Conclusion Questions (8), Safety/Grammer (1).