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1.1 Scientific Method

1.1 Scientific Method. Chapter 1. Warm-up. What is “science?”. Objectives. Students will be able to: Outline the steps of the scientific method Make inferences based on data Design a controlled experiment Identify DV & IV Standards: BIO.B.3.3.1. What is “Science?”.

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1.1 Scientific Method

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  1. 1.1 Scientific Method Chapter 1

  2. Warm-up • What is “science?”

  3. Objectives • Students will be able to: • Outline the steps of the scientific method • Make inferences based on data • Design a controlled experiment • Identify DV & IV • Standards: • BIO.B.3.3.1

  4. What is “Science?” • An organized way to use evidence to learn about the natural world

  5. Where does evidence come from? • OBSERVATIONS! • Scientists use observations to gather data

  6. Types of Data • QuaNtitative • Numbers data • Examples? • Qualitative data • Observations • Examples?

  7. What next? • Observation: You are sitting in a train station. A man carrying a briefcase runs past you. • You make an inference • A logical interpretation of observations

  8. Testing Evidence • Ask a scientific question… • A question that can be answered through experimentation • Examples of a scientific question: • Does Pepsi have more carbonation than Coke? • What is the effect of smoke on lung cancer?

  9. Testing Evidence • What is a non-scientific question? • Did Abraham Lincoln like the color blue? • Is Monday night football more fun to watch that Sunday night football?

  10. Testing Evidence • Scientific Question or no? • Why is basketball a boring sport? • Did grass turn brown because it needs fertilizer? • Does studying for a test positively impact the result? • Why is Dunkin’ Donuts coffee tastier than Wawa’s?

  11. Answering the question • A hypothesis is a possible explanation for a set of observations • A possible answer to the scientific question

  12. Answering the question • True or False: • There is only one hypothesis for a set of observations. • It needs to be a testable statement • A hypothesis is always correct

  13. Activity: Inference Cubes

  14. So you have a hypothesis… • How do you figure out if your hypothesis is correct? • Answer: EXPERIMENTATION

  15. Designing an Experiment • An experiment tests an hypothesis • An experiment compares two or more groups • Ex: fertilizer vs. no fertilizer

  16. Designing an Experiment • An experiment involves variables • Variables = factors that can change • Controlled variables: variables that are the same in the two groups • Independent or manipulated variable: the single factor that is different between the two groups • Dependent or responding variable: the result of the experiment, what is measured

  17. Practice

  18. Practice: Redi’s Experiment

  19. Activity: Simpson’s Experiments

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