1. 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.

2. MATERIALS You / yourself Timer (classroom clock) Remember:
Pulse: expansion and relaxation of the artery wall
Pulse Rate ~ Heart Beat ~ Physical Activity

3. PROCEDURE Pulse Rate = beats per minute (b/min)
1. Measure your pulse rate at rest for one minute using a timer (stopwatch, classroom clock). Record Results
2. 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.

4. 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)?

5. CONCLUSION
NOTE: 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).