What’s that Beat?What’s that Beat?

Heart Rate: Resting RateHeart Rate: Resting RateFind your pulse.Find your pulse.Count your heart beats while Count your heart beats while I time you.I time you.Write it down on your table:Write it down on your table:

  Resting Active…

Number of Heart Beats    

Time Interval (s) 15 s

Jumping JacksJumping Jacks

Count each Jumping Jack while I time you!Count each Jumping Jack while I time you!Fill in the table on the worksheet:Fill in the table on the worksheet:

  Trial 1 Trial 2

Number Jumping Jacks    

Time Interval 15 s 15 s

Active Heart RateActive Heart RateYou’ll calculate your You’ll calculate your heart rate 3 more times heart rate 3 more times after 3 different sets of after 3 different sets of jumping jacks!jumping jacks!

  Active 1 Active 2 Active 3Number Heart Beats      

Time Interval 15 sec. 15 sec. 15 sec.

You Tell Me!You Tell Me!What’s a ratio?What’s a ratio?What’s a rate?What’s a rate?– It’s what you’ve just calculated….It’s what you’ve just calculated….

– A ratio with units!A ratio with units!– Some examples:Some examples:

Miles per hour (mph)Miles per hour (mph)Words per minute (wpm)Words per minute (wpm)

– Other examples?Other examples?

How is it written?How is it written?You write a rate like a fraction:You write a rate like a fraction:

HourMiles

MinuteWords

Math ChallengeMath Challenge

Jack and Jill drove up the hill at 25 miles Jack and Jill drove up the hill at 25 miles per hour. How many miles did they travel per hour. How many miles did they travel in 1 hr 30 min? in 1 hr 30 min? How many miles did they drive in 3hr 12 How many miles did they drive in 3hr 12 min?min?How much time did it take them to travel 5 How much time did it take them to travel 5 miles?miles?

Math ChallengeMath Challenge

Jack did 10 jumping jacks in 15 seconds. Jack did 10 jumping jacks in 15 seconds. At this same rate, how many jumping jacks At this same rate, how many jumping jacks could Jack do in 1 minute? could Jack do in 1 minute? How long would it take him to do 100 How long would it take him to do 100 jumping jacks at this same rate?jumping jacks at this same rate?How many jumping jacks did Jack do per How many jumping jacks did Jack do per second?second?