Making Connections NYSED Lab The new NYSED monument

“Making Connections” NYSED Lab The new NYSED monument, possibly? (LE teacher humor, you wouldn’t understand…)

First, Look for a pattern… Taking your pulse is rather simple. Use the index and middle finger of one hand to palpate (feel) the arterial pulse in your radial artery on your wrist. Count for 20 seconds and multiply by 3 to determine the number of times your heart beats in one minute. Pulse Rate Trial #1 ____X 3 = _____ bpm

Collect “Class Data” and prepare a “histogram” of your results… Pulse Rate per minute (range of averages) <51 51 -60 61 -70 71 -80 81 -90 >90 Number of students in this range And now, develop and draw your histogram… <51 51 -60 61 -70 71 -80 Average Pulse Rate Range 81 -90 >90

Go ahead answer the questions on page 4 with a partner. • Do you see a pattern to the class data? ____ • If so, what is it? If not, explain why you think a pattern does not exist. • Etc….

How Does Fatigue Affect Muscle Performance? • A condition known as muscle fatigue occurs when certain waste products of muscle cell activity build up in the cells. Until these waste chemicals are removed, the fatigue will continue.

Aerobic Respiration • Breaking down glucose using oxygen.

Anaerobic Respiration • Breaking down glucose without the use of oxygen.

Clothespin squeezes and lactic acid

How many times in one minute can you squeeze a clothespin? ? • Go to: http: //www. exploratorium. edu/hockey/fitness 2. html • An interesting take on the entire lactic acid build-up argument.

Now go on and answer the questions on pages 5 and 6…….

Part B. Investigating claims • You hear many claims made every day. Advertisers make claims about the usefulness or effectiveness of their products. Your friend may claim to be able to do something that you do not think he or she can really do. Do you believe all the claims that people make? Have you ever bough a product based on a claim made in an advertisement only to find that the product did not work as you expected it to?

• When does a claim become a fact? Scientists look for evidence to support or refute a claim. Evidence can help you determine which claims are facts and which are opinions or even misrepresentations. For example, if one of your classmate’s claims to be the fastest runner in the class, you could gather evidence by holding a series of races. If your classmate’s claim is true, that person should win all of the races. If another individual wins the races, your classmate’s claim was simply an opinion not supported by the evidence.

Conducting an investigation • We want to conduct an investigation to determine which of two opposing claims can be supported with evidence. • Read the section below that describes the two opposing claims. • Then we are going to investigate to see which one is supported.

Conflicting claims • STUDENT A claims that a person will be able to squeeze a clothespin more times in a minute if the person exercises first. Student A suggests that exercising produces a faster pulse rate, which indicates that the blood is getting to the muscle faster.

Conflicting claims • STUDENT B claims that a person will be able to squeeze a clothespin more times in a minute if the person does NOT exercises first. Student B suggests that exercise takes energy away from the muscles, and a person who has been resting will have more energy.

You decide…. • Which of the two claims do you agree with?

And now, make a hypothesis… Student A Student B If you exercise first, then you should be able to squeeze a clothespin more times in one minute. If you rest first, then you should be able to squeeze a clothespin more times in one minute. Explain why…

Design your experiment • Design a controlled experiment on your outline sheet. • Have me sign it when you are finished • Conduct your experiment. • Good luck!

Organization of final report • You will type up a final report outlining what you did in your experiment. • Follow the format on page 9 when typing your final report

Organization of final report • • Title Hypothesis Methods and Materials Data Collected Discussion and Conclusions Suggestion for Improvement* Suggestions for Further Research*

Now, do your “experiment” and collect your data… 3. . . 2… 1… GO!!! Start counting the number of squeezes for one FULL minute and record your data.