Aim: 1. Learn how exercise and resting affect muscle performance.2. Learn how to write a Lab Report

ProblemDetermine the question you are trying to answer.Use the format:

“What is the effect of ___________ on _____________________?”

What is the effect of ____________on _________________________?

exercise first

clothespin squeezing rate

What is the effect of ____________on _________________________?

resting first

clothespin squeezing rate

HypothesisHypothesis

If somebody exercises first

then she will increase the clothspin squeezing rate.

The hypothesis is a tentative statement about the expected relationship between the variables.Use the format: “If _____________________________Then ______________________________________

If somebody rests first

then she will increase the clothspin squeezing rate.

Variables

• The independent variable is ___________

• The dependent variable is _____________

Your independent variable is the variable you chose to test in your experiment.Your dependent variable is the variable you measure in your experiment.

Exercise first / resting first

clothespin squeezing rate

Design of the Experiment• Describe your experimental group in at least four

steps. • Describe your control group in at least four

steps. – Decide how many individuals you will test– What will you have them to do?

• For how long?• Give details, be specific

– What will you measure?– How many trials will conduct with each group?– How will the control and experimental group differ?

Design of the experimentsExperimental Group1. Take ____students. 2. Let them exercise first by (doing something)___ for (how long)___3. Ask them to hold a clothespin between their right thumb and index

finger. Ask them to pinch the ends together and release them.4. Count ______________________________________________5. Rest for _____ minutes.6. Repeat the experiment _______times.

Claim A

Control Group1. Take ____students. 2. Let them rest first for (how long) ________________3. Ask them to hold a clothespin between their right thumb and index

finger. Ask them to pinch the ends together and release them.4. Count ______________________________________________5. Rest for _____ minutes.6. Repeat the experiment _______times.

ObservationData table

Control Group: Clothespin Squeezing Rate after _______________Student’s

Name

Trial #1 Trial #2 Trial #3 Average

Design a data table to record your observations

Experimental Group: Clothespin Squeezing Rate after __________Student’s

Name

Trial #1 Trial #2 Trial #3 Average

Observations• Organize and graph your data using a line graph

Average Clothespin Squeezing Rate of Students in class

Students

Ave

rage

Clo

thes

pin

Squ

eezi

ng R

ate

(tim

es/m

in)

Edwin Lin Han Adeb

After Exercise

After Resting

Conclusion• Review your hypothesis• Explain your conclusion based on your observations

and your knowledge.

This investigation has been performed by….

My hypothesis is (true or false).According to my data _____________________________

One possible explanation of my conclusion is __________

Aim: Practice Regents question on the lab “Making Connections”

• Do Now: List 4 things you learned from the lab “Making Connections”

• Test: Wednesday, December 24th

Visit www.liberty168.wikispaces.com/Click on Making Connection Lab