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Monday, August 15, 2011

Learn about the scientific method and how to conduct controlled experiments. Explore the different parts of an experiment and understand the importance of variables. Develop hypotheses, collect data, and draw conclusions.

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Monday, August 15, 2011

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  1. Monday, August 15, 2011 • Pick up the Paper from the side table. • If you brought a notebook, use a Sharpie to write your name on it & place it in your period’s crate. • Turn in your Parent Letterto your period’s colored drawer. • Write down your HW in your Agenda!!!  • Finish your Scavenger Hunt& turn it in!

  2. The Scientific Method

  3. Scientists use experiments to test a hypothesis or answer a question

  4. Parts of an Experiment ASK A QUESTION What question is being answered, problem solved, or hypothesis tested. • Leads to observations • For example, “How many drops of water fit on a penny?”

  5. Parts of an Experiment Form a Hypothesis An educated guess about the results. • Based on observations & can be tested!!! • Always support your idea with a reason! (I think that…because…) • What is your hypothesis about the number of water drops that can fit on a penny? Write yours down! • Make a prediction with an if-then statement • Example: ________________________

  6. Parts of an Experiment Materials: Items used during the experiment. What would we need for the penny experiment? Write yours down…

  7. Parts of an Experiment Procedures: Steps followed during experiment. • Write in a numbered list • Should be detailed enough that anyone can follow exactly what you did. • How many times you are going to do the experiment? It should be written here!

  8. Practice • Work with your tablemate to practice writing out a procedure for testing the penny experiment • Be specific!

  9. Parts of an Experiment Collecting Data: All the information gathered while performing the experiment.

  10. Parts of an Experiment Analyze the Results & Draw Conclusions: Analyze your data to determine the final outcome of the experiment What do you NOW believe as a result of the experiment or observations? • Restate your hypothesis (or at least relate your findings to it) • Support your claim with at least 2 pieces of data and graphs • Use good explanatory language

  11. Practice Conclusion • What should our conclusion be about how many drops of water a penny can hold? Write one for your experiment, using the above guidelines:

  12. Parts of an Experiment Share your results: Publish your findings so that others may benefit from your work.

  13. Tuesday, August 16, 2011 • Pick up the Papersfrom the side table. • If you brought a notebook, use a Sharpie to write your name on it & place it in your period’s crate. • Turn in your Parent Letterto your period’s colored drawer. • Write down your HW in your Agenda!!!  • Finish your Scavenger Hunt& turn it in! • Get out your Scientific Method Notes.

  14. Controlled Experiments There are two groups in a controlled experiment: 1) Control Group: the part of the experiment that is left alone or “natural”. Used to compare back to.

  15. Controlled Experiments There are two groups in a controlled experiment: 2) Experimental Group: the part of the experiment in which a factor or variable is changed.

  16. What is a Variable? • Variables are parts of an experiment

  17. What is a Variable? Control (constant variables): factors in an experiment that are NOT changed.

  18. What is a Variable? • Independent (manipulated) Variable: • factors in an experiment that are changed. • Good experiments have only ONE manipulated variable.

  19. What is a Variable? Dependent (responding) Variable: the factor that you are measuring.

  20. Theory: An explanation that ties together many hypotheses and observations Example: Theory of Evolution

  21. Law: A summary of many experimentalresults and observations that tells how things work True and Universal Example: Law of Gravity, Newton’s Laws

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