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What is science The Scientific Method
Unit 1 What is science The Scientific Method
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What is science? Science is a process of gathering knowledge about the world around us Goal of science: To understand and investigate the natural world, and to explain events and phenomena in the natural world.
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Science is different because…
It is an organized way of using evidence to learn about the natural world. Concepts or ideas must be testable It is not a set of truths that never change It is a set of stable ideas that can change with new evidence Science is an ongoing process
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The Scientific Method Why is it so important to follow this method?
Scientific ideas MUST be testable and repeatable. The scientific method is the common process for establishing these ideas.
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Think about the gum lab…..
The Scientific Method Think about the gum lab….. Ask a question Gather background information Can be gathered through research or the senses Construct a hypothesis Hypothesis is a prediction that suggests a solution to the question/problem If…then…will happen Must be testable
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The Scientific Method Conduct an experiment to test the hypothesis
****Must be written step-by-step**** Materials: List of everything used Procedure: Numbered steps. Exactly what you did and how you did it. Must be repeatable Variables: Controlled- Constant (doesn’t change) Independent- Manipulated (is changed) Dependent- the response or data
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The Scientific Method Record and analyze data Types of Data:
Must be organized into chart, table, or graph Types of Data: Quantitative: Expressed as numbers, obtained by counting and measuring Exact temperature, Weight, Height, Number of stems Qualitative: Descriptions that involve characteristics that can’t usually be counted Shiny/Dull, Old/New, Blue/Purple/Green Inference: Logical interpretation based on prior knowledge or experience/observation. Observation: What you can physically see.
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Boy in the Pond Worksheet
Place an ‘I’ after statements that are inferences, and an ‘O’ after the statements that are observations.
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The Scientific Method Draw a conclusion and communicate your results Did the data support or not support your hypothesis You are never proving that a hypothesis is true, only supporting it. Scientific Theory- Well tested hypothesis that has been repeatedly supported.
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- What do you want to learn more about…
Asking a QUESTION: - What do you want to learn more about… Which type of music will have the greatest benefit on a student’s grade: Hard rock, pop, or classical? #1
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- What information can we uncover to help us form an educated guess?
#2 Gather background INFORMATION: - What information can we uncover to help us form an educated guess?
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Forming a HYPOTHESIS: #3
If students listened to classical music then it will improve their grades because I believe the melodies and soft tones promote learning. Forming a HYPOTHESIS: - Educated guess of an answer to the question - Should be an “If…then….” Statement (well supported) #3
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a Conducting the EXPERIMENT: Materials #4 - Test your hypothesis
- Written and carefully followed step-by-step experiment designed to test hypothesis 40 students 30 iPods 10 copies of: Led Zeppelin Katy Perry Bach’s Cello Suites 30 pre-tests 30 post-tests
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c b Procedure - Step-by-step format - Numbered steps - Direct commands
Administer pre-test to all students Begin unit on genetics Assign 3 groups of 10 students a soundtrack to listen to. 10 students get no music to listen to. Instruct students to study one hour a day – and only one hour a day – while listening to their assigned music etc… etc… c - Step-by-step format - Numbered steps - Direct commands -Repeatable b Procedure
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c c Controlled Variable: student population, others? Independent Variable: types of music Dependent Variable: academic success 4) Control Group: students studying in absence of music Variables - State the controlled (constant), independent (manipulated), and dependent (responding) variables - Identify the control group if applicable
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ANALYZE RESULTS: -Interpret the information collected during the experiment -Data includes charts, tables, PICTURES, and graphs (excel) #5
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- Possible sources of error?
Drawing CONCLUSIONS: - Refer back to your hypothesis (supported, not supported? Why/why not?) - Possible sources of error? - What did you learn? #6
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