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Copy of Scientific Method

introduction to scientific method

Kenley Nebeker

on 6 September 2012

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Transcript of Copy of Scientific Method

THE SCIENTIFIC METHOD What is the Scientific Method? The scientific method involves a series of steps that are used to investigate knowledge about the natural world. Let's take a closer look at these steps and the terminology you will need to understand before you start a science lab. SCIENTIFIC METHOD STEPS Pose TESTABLE QUESTIONs Develop a question or problem that can be solved through experimentation... It can't be just any question...it must be TESTABLE Testable questions are...
Can be disproven (proven not true) Pose Questions Form a Hypothesis Design an experiment Collect and Interpret Data Draw Conclusions WHAT'S THE DIFFERENCE BETWEEN A TESTABLE AND NON-TESTABLE QUESTION? TESTABLE VS. NON-TESTABLE Is Pepsi better than Coke? Which soda, Pepsi or Coca-Cola, is more damaging to your teeth? This is a NON-TESTABLE QUESTION. In the Scientific Method, questions cannot be based on personal opinions. This question is testable because... FORM A HYPOTHESIS Hypothesis = an educated guess of an experiment's results. When we write a Hypothesis it is...
ALWAYS in a If _________, then ________ because ________. EXAMPLE Question: Which soda, Pepsi or Coca-Cola, is more damaging to your teeth? Hypothesis: If Pepsi has more sugar, then Pepsi will be more damaging to your teeth because sugar decays teeth. THINK, PAIR, SHARE Come up with a hypothesis using the "if, then, because" form for the following question... How fast would an ice cube melt based on the temperatures of the different classrooms at Canyon Ridge High School? If you put an ice cube in Coach Nebeker's classroom, then it will melt slower than in Mrs. Weatherford's classroom, because Coach Nebeker's classroom always has a colder temperature Design an Experiment Experiment = an organized procedure to study something under controlled conditions. Develop and follow a Procedure Include a detailed materials list The outcome must be measurable Variables There are two variables you must measure in every experiment... Variable = Any factor that can change Independent Variable The factor you wish to test Dependent Variable The factor you wish to measure The factor that's intentionally varied by the experimenter. The factor that may change as a result of changes made in the independent variable Example: The ice cube experiment We are measuring the rate (speed) that an ice cube melts based on the classroom temperature. THINK, PAIR, SHARE What is the Independent Variable?
What is the Dependent Variable? Independent Variable = The temperature of the classrooms

Dependent Variable = The rate (speed) that the ice cube melts. Collect and Interpret Data Look at the evidence gathered Analyze the information (look at what the data is telling us) Use tables and graphs to show patterns There are different types of graphs to show your results.... Bar Graph Line Graph Pie Chart Draw Conclusions The conclusion tells us if your hypothesis was right or wrong. You explain why or why not your data supported or refuted your hypothesis. It's okay if your hypothesis is incorrect.... http://www.toptenz.net/top-10-most-famous-scientific-theories-that-turned-out-to-be-wrong.php EXIT TICKET What is a hypothesis?
Create a hypothesis for the following question: Do students who do their homework every night do better on exams? *remember "if...then...because" Pose questions
Form a Hypothesis
Design an Experiment
Make observations
Collect and interpret Data
Draw Conclusions Communicate Make Observations Communicate Communication involves
Talking to classmates
Seeking advice from teachers and professionals
Researching the topic
And finally sharing your ideas Make Observations Observations need to be:
Include EVERYTHING! Narrative The rock formation was mainly made up of basalt coming from the most recent eruption of the Deitrich Volcano........ The Scientific Method In Action
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