Lesson FifteenFactors That Affect Heart Rate

•Measure resting heart rate by feeling the pulse

•Determine the effect of exercise and weight on heart rate

Read Introduction and “Blue” reading on p 130-131Define resting heart rate and pulse.(Solicit ideas about what might affect heart rate.)

What affect does exercise/ weight have on heart rate? (pick one)

Getting Started (call on students to share answers)

Measure your heart rate for 1 min. (Ask for answers)

Is there a short cut to find “beats per minute” ?

How could we find the average resting heart rate of the class?

If I ___________ then my heart rate will _______ because ________________

Gallon water containers (anything that add weight), stopwatch, rulers

Inquiry 15.1 p.133 (Can use student sheet 15.1, part1)

Work as a group to design an experiment

Design a data table

Get it approved by the teacher

(This could be day one)

Complete your experiment and record in your data table

Graph of group heart rates (use student sheet or graph paper)

Complete Part 2 of SS 15.1

Answer your question using your data and restate your hypothesis.

Answer reflection questions 4-6 in SG p 133 ( you must go over class data to make sure both weight and exercise are discussed)

Read - Blood: Life’s Liquid p 134 in SG (The only place parts of blood, blood types and lymphatic system are discussed. Consider a foldable or graphic organizer to get notes.)

Extensions 1 (animal rates) & 4 (hemophilia)Research blood diseases and conditionsBlood types

Resting heart rate Pulse

Red blood cells Platelets

White blood cells Plasma

(Pass out study guide for the written assessment which occurs as part of lesson 17. The study guide is student sheet 16.1 on p 189

of the TM.