Forming a Hypothesis
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Transcript of Forming a Hypothesis
FORMING A HYPOTHESIS
Tuesday, Aug. 28th
Purposes: • Content: Develop personal responsibility and make
hypotheses based on observations of the natural world.• • Language: Use an “if . . . then” sentence frame to create
hypotheses.
• PWG Outcome: help your group form hypotheses for each inquiry.
• Day 7 –Discuss with your partner what makes for good communication between students.
First 20 days
Hypothesis Structure
IF Then
How to make a hypothesis statement:• Hypothesis statements are ALWAYS written as "If ...Then"
statements.
Example of a hypothesis• If I stay out in the sun for 3 hours then I will get a sunburn.
Changing my thoughts into hypotheses
• I’m thinking: The higher the temperature of the water, the faster the egg will cook.
• I write as a hypothesis: If I raise the temperature of the water then, the egg will cook faster
• Or. . . If temperatures of water are raised, then the eggs will cook faster.
Changing my thoughts into hypotheses
• I’m thinking: Lemon trees receiving the most water • produce the largest lemons.
• I write as a hypothesis: If I increase the amount of water given to lemon trees, the size of the lemons produced will increase.
How to disagree agreeably• ..\My Flipcharts\My Flipcharts\Scientific Method and natur
e of science\Disagreeing respectfully.flipchart
You try :
1. With the group: If I do this;______________ then ________________. (will happen)
2. With a partner: If I ___________________ then _________________.
3. By yourself: If ______________________ then ________________.
Example of a hypothesis• If I stay out in the sun for 3 hours then I will get a sunburn.
Determining Dependent and Independent variables
Independent Variable - Variable in an experiment that is changed or manipulated.
I.V. - The amount of time spent in the sun
Dependent Variable - The variable in an experiment that responds to the change and is measured.
D.V. - Getting a sunburn
How could we change our hypothesis to provide for a more scientific experiment?• Measure using quantitative data versus qualitative data.
Vocabulary:• Quantitative Data: uses numbers and measurements• Qualitative Data: uses 5 senses to observe
Assignment• This week we will be creating an experiment from
beginning to end. You will be following the steps of scientific inquiry (the scientific method).
• You must think of something you would like to test.
• Homework: come up with a question, observe or research something, and come up with a hypothesis statement.