# Science Fair Project 2012. Ask a question?  What do you want to investigate or figure out in the this lesson?  What will be the main question that will.

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Science Fair Project 2012

Ask a question?  What do you want to investigate or figure out in the this lesson?  What will be the main question that will guide your learning?

Question Examples:  Not so great:  Which brand of battery is the best?  Are mice smart?  How do plants grow?  Great:  Can you estimate how high a tree is by measuring it’s shadow?  Which brand of battery last longer?  Does a ball roll faster on grass or dirt?

Research Search for answers Ask someone Think of past experiences Look in text books

Hypothesis Based on the research you have done, you will be writing an answer or solution – your best educated guess – to your question. This is what you think will solve the problem Restate the problem in a declarative sentence that would answer your question/problem

Hypothesis  Do not begin with I think or I predict  "If _____[I do this] _____, then _____[this]_____ will happen." (Fill in the blanks with the appropriate information for your own experiment.)  Your hypothesis should be something that you can actually test, what's called a testable hypothesis. In other words, you need to be able to measure both "what you do" and "what will happen."  "If I put fenders on a bicycle [having fenders is the independent variable], then they will keep the rider dry when riding through puddles [the dependent variable is how much water splashes on the rider]."

Variables  Controlled variables: These are the things that are kept the same throughout your experiments.  Independent variable: The one variable that you purposely change and test.  Dependent variable: The measure of change observed because of the independent variable. It is important to decide how you are going to measure the change.

Hypothesis Check List What Makes a Good Hypothesis? For a Good Hypothesis, You Should Answer "Yes" to Every Question Is the hypothesis based on information contained in my research? Yes / No Does the hypothesis include the independent and dependent variables? Yes / No Have you worded the hypothesis so that it can be tested in the experiment? Yes / No

Materials  Type a detailed list of the items you needed to complete your experiments.  Be specific about the amounts used.  List in a column  Include quantity and size

Materials Check List What Makes a Good Materials List? For a Good Materials List, You Should Answer "Yes" to Every Question Have you listed all necessary materials? Yes / No Have you described the materials in sufficient detail? Yes / No

Procedure  List all of the steps used in completing your experiment.  Remember to number your steps.

Procedures Check List What Makes a Good Experimental Procedure? For a Good Experimental Procedure, You Should Answer "Yes" to Every Question Have you included a description and size for all experimental and control groups? Yes / No Have you included a step-by-step list of all procedures?Yes / No Have you described how to the change independent variable and how to measure that change? Yes / No Have you explained how to measure the resulting change in the dependent variable or variables? Yes / No Have you explained how the controlled variables will be maintained at a constant value? Yes / No Have you specified how many times you intend to repeat the experiment (should be at least three times), and is that number of repetitions sufficient to give you reliable data? Yes / No The ultimate test: Can another individual duplicate the experiment based on the experimental procedure you have written? Yes / No If you are doing an engineering or programming project, have you completed several preliminary designs? Yes / No

Test (an organized process used to test the hypothesis)  Test the hypothesis  Follow the procedures step by step  Collect data  Conduct experiment at least three times for accuracy

Variables  Controlled variables: These are the things that are kept the same throughout your experiments.  Independent variable: The one variable that you purposely change and test.  Dependent variable: The measure of change observed because of the independent variable. It is important to decide how you are going to measure the change.

Variables Check List What Makes for Good Variables? For Good Variables, You Should Answer "Yes" to Every Question Is the independent variable measurable?Yes / No Can you change the independent variable during the experiment? Yes / No Have you identified all relevant dependent variables, and are they all caused by and dependent on the independent variable? Yes / No Are all dependent variable(s) measurable?Yes / No Have you identified all relevant controlled variables?Yes / No Can all controlled variables be held at a steady value during the experiment? Yes / No

Data/Observations  It is easier to understand the data if it is put into a table or graph.  Make sure all data is clearly labeled.  Add photos of your experiments.

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