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Scimethnew

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Transcript

• 1. CATALYST Do you think chimpanzees can learn American Sign Language? How about use a computer? Why or why not?
• 2. Meet Jane Goodall…
• 3. SCIENTIFIC METHOD
• This is a series of steps that scientists use answer questions and solve problems
• 4. SCIENTIFIC METHOD
• SIX
• GREAT
• FARMERS
• PLANT
• ALL
• DAY
• (this is a mnemonic device)
• 5. Six: State the Problem
• The scientist identifies the question or subject that he/she wishes to study
• 6. Great: Gather Information
• The scientist researches the subject that he/she is studying.
• Places to do research: library, internet, encyclopedia, television, etc.
• 7. Farmers: Form Hypothesis
• A hypothesis is the scientist’s educated guess or best guess about what will happen in the experiment.
• Usually has the words “If... Then”
• IF I eat too much, THEN I will get sick
• Inference – a logical interpretation based on prior knowledge or experience (Ex.  You see a window broken and a baseball on the floor next to the shattered glass.  You can -infer- that a baseball broke your window)
• 8. Plant: Perform Experiment
• Scientists develop a way to test their hypothesis
• Independent Variable (manipulated) : part of the experiment that can be changed or controlled
• Dependent Variable (responding) : What is measured in the experiment
Control –what you keep the same. A good experiment only changes one thing!
• 9. All: Analyze Data
• Scientists compile data into charts and graphs
• This helps make sense of the information taken from the experiment
• Quantitative – numbers
• Qualitative – description
• X –axis is the dependent variable
• Y-axis is the independent variable
• 10. Day: Draw Conclusions
• Scientist decides whether the original hypothesis was correct.
• If the answer is “ YES ” then you are done
• If the answer is “ NO ” then a new hypothesis is made and you repeat the experiment