Problem Determine the question you are trying to answer. Use the format:

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# Problem Determine the question you are trying to answer. Use the format: - PowerPoint PPT Presentation

## Problem Determine the question you are trying to answer. Use the format:

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

2. ProblemDetermine the question you are trying to answer.Use the format: “What is the effect of ___________ on _____________________?” exercise first What is the effect of ____________ on _________________________? clothespin squeezing rate resting first What is the effect of ____________ on _________________________? clothespin squeezing rate

3. Hypothesis The hypothesis is a tentative statement about the expected relationship between the variables. Use the format: “If _____________________________ Then ______________________________________ If somebody exercises first then she will increase the clothspin squeezing rate. If somebody rests first then she will increase the clothspin squeezing rate.

4. Variables • 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 • The independent variable is ___________ • The dependent variable is _____________ clothespin squeezing rate

5. 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?

6. Claim A Design of the experiments Experimental Group • Take ____students. • Let them exercise first by (doing something)___ for (how long)___ • Ask them to hold a clothespin between their right thumb and index finger. Ask them to pinch the ends together and release them. • Count ______________________________________________ • Rest for _____ minutes. • Repeat the experiment _______times. Control Group • Take ____students. • Let them rest first for (how long) ________________ • Ask them to hold a clothespin between their right thumb and index finger. Ask them to pinch the ends together and release them. • Count ______________________________________________ • Rest for _____ minutes. • Repeat the experiment _______times.

7. ObservationData table Design a data table to record your observations

8. Observations • Organize and graph your data using a line graph Average Clothespin Squeezing Rate of Students in class After Exercise After Resting Average Clothespin Squeezing Rate (times/min) Edwin Lin Han Adeb Students

9. Conclusion • Review your hypothesis • Explain your conclusion based on your observations and your knowledge. My hypothesis is (true or false). According to my data _____________________________ One possible explanation of my conclusion is __________ This investigation has been performed by….

10. 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