Scientific Method Use Cornell note taking to write

Scientific Method Use Cornell note taking to write the most important information in this presentation. Use only right page (s)

What is the Scientific Method? n n It is a process used to gather information to find answers to questions. Provides us with an organized method for conducting and analyzing an experiment.

Steps in the Scientific Method n n n n Identify a Problem or a question Hypothesis Experiment Data Collection Analyze Data Formulate a Conclusion Retest Communicate the Results/ write a lab report

Title The effect of _____ on _____. independent variable

Problem or Question (Based on observations) Will ____ affect ____? independent variable

Hypothesis n n n Shows cause and effect Must be testable If _______ then ____, independent variable because______. n Predicts an outcome and explains why.

Experiment n A procedure to test the hypothesis.

Scientific Experiments Follow Rules n An experimenter changes one factor (independent variable) and observes or measures (dependent variable) what happens.

Variables n n The factor that is changed is known as the independent variable. The factor that is measured or observed is called the dependent variable.

Remember: To be a Valid Experiment: Two groups are required --the control & experimental groups n There should be only one variable n

What is the Purpose of a Control group? Control Group is the group NOT being tested, used for COMPARISON n Experimental Group is the group being tested. n

Constants The experimenter makes a special effort to keep other factors constant so that they will not effect the outcome. n Everything that stays the same are called control variables or constants. n

Repeated # of Trials One more thing… it is best to make several trials with each independent variable.

Data Results of the experiment n May be quantitative (numbers) or qualitative (descriptive) n

Data Must be organized n Can be organized into charts, tables, or graphs n Temp (independent var. ) Hot (40 C) Cold (15 C) Warm (30 C) Room temp (25 C) Trial 1 Trial 2 Trial 3

Conclusion n Did your data support on not support your hypothesis?

Error Analysis-Retest In order to verify the results, experiments must be retested. How can you improve your experiment?

Scientific Method Output (left Page) n n Paste into your first left page next to Scientific Method Cornell Notes. Use your notes to fill in the blanks.

Scientific Method Lab Report (use next Right Page: this will be your example for every lab report in the future) n n n n Title Problem Hypothesis Independent Variable Dependent Variable Control Group Constants Results Create a table to record data as you collect it during your experiment. The effect of _______ on ____. Will _____ affect _____ ? If ______ then __________ Temp (independent var. ) Trial 1 Trial 2 Trial 3 Hot (40 C) Cold (15 C) Warm (30 C) Write these two in your left page. n Analysis and Conclusion n Error Analysis Room temp (25 C) My hypothesis was/was not supported by my data collected. Explain why or why not. ( 5 sentences) How can you improve this experiment? Explain how and why you need to do this. (5 sentences)

Helicopter lab You will use your understanding of the scientific method to test any variable you want in a paper helicopter. You will set up a lab report and fill in the necessary information as you come up with it on your own. An example is given in the title. You may use this variable or any other interesting variable you want. Have FUN!!!

n n n n Title Problem Hypothesis Independent Variable Dependent Variable Control Group Constants Results Create a table to record data as you collect it during your experiment. n Write these two in your left page. Analysis and Conclusion n not. ( 5 sentences) Error Analysis The effect of _direction of the blades_ on _direction the helicopter spins. Will _____ affect _____ ? If ______ then __________ Temp (independent var. ) Trial 1 Trial 2 Trial 3 My hypothesis was/was not supported by my data collected. Explain why or why How can you improve this experiment? Explain how and why you need to do this. (5 sentences)