scientific method. what is the scientific method? it is a method that is used to find answers to...

Scientific MethodScientific Method

What is the scientific What is the scientific method?method?

It is a method It is a method that is used to that is used to find answers to find answers to questions questions about the world about the world around us.around us.

Is there only one “scientific Is there only one “scientific method”?method”?

There are several versions of the scientific There are several versions of the scientific method.method.

Some versions have many steps, while Some versions have many steps, while others have only a few.others have only a few.

They all begin with a problem or a They all begin with a problem or a question to be answered based on question to be answered based on observations of the world around us.observations of the world around us.

What are the steps in the What are the steps in the scientific method?scientific method?

Identify the problem:Identify the problem:

What do you want to What do you want to find out?find out?

Use your Use your observations to state observations to state the problem as a the problem as a question.question.

What are the steps in the What are the steps in the scientific method?scientific method?

Form a hypothesis:Form a hypothesis: Is an Is an educated guesseducated guess

What do you think will What do you think will happen? Make a happen? Make a prediction.prediction.

The hypothesis must be The hypothesis must be measurable or testable measurable or testable and written in an if….. and written in an if….. then…… format.then…… format.

What are the steps in the What are the steps in the scientific method?scientific method?

Create an Create an experiment:experiment:

How will you test How will you test your hypothesis?your hypothesis?

Write a step-by-Write a step-by-step procedure that step procedure that another person can another person can follow.follow.

What are the steps in the What are the steps in the scientific method?scientific method?

Perform the Perform the experiment:experiment:

Follow the steps in Follow the steps in the procedure.the procedure.

Record data and Record data and make observations.make observations.

What are the steps in the What are the steps in the scientific method?scientific method?

Analyze Data:Analyze Data:

Does your data Does your data and observations and observations support your support your hypothesis?hypothesis?

What are the steps in the What are the steps in the scientific method?scientific method?

Communicate Communicate the results:the results:

If your hypothesis If your hypothesis was correct, was correct, summarize the summarize the experiment.experiment.

VariablesVariables

Controlled Controlled experiment: An experiment: An experiment in experiment in which all the which all the variables except variables except for one remain the for one remain the samesame

Types of variablesTypes of variables

Independent variable(manipulated): Independent variable(manipulated): the factor that is intentionally the factor that is intentionally changed by the scientist or person changed by the scientist or person doing the experiment.doing the experiment.

Dependent variable (responding): a Dependent variable (responding): a response to the independent response to the independent variable; what you are testing for.variable; what you are testing for.

Types of VariablesTypes of Variables

Controlled variable: the part of the Controlled variable: the part of the experiment that stays the same.experiment that stays the same.

For example: Students of different For example: Students of different ages were given a puzzle to ages were given a puzzle to assemble. The puzzle assembly time assemble. The puzzle assembly time was measured.was measured.

What are the 3 variables?What are the 3 variables?