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Experimental Design

Experimental Design. Objective: TSW use an Experimental Design Diagram (EDD) and a Modified EDD to define an experiment. Paper Airplane Throw. Let’s first make a paper airplane You don’t have to make a plane Then, we’ll have a fly-off to pick the best two airplanes

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Experimental Design

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  1. Experimental Design Objective: TSW use an Experimental Design Diagram (EDD) and a Modified EDD to define an experiment

  2. Paper Airplane Throw • Let’s first make a paper airplane • You don’t have to make a plane • Then, we’ll have a fly-off to pick the best two airplanes • Don’t leave your chair until told to • If you do – your out of the fly-off!!!

  3. You must correctly answer the following Question to participate in the Fly-off • If we measure the distance a paper airplane flies • Is thedistance a paper airplane flies the DV or the IV? • Stand up if you think it is the “IV” • Put your paper airplane in the waste basket and sit down • Not really, you can still throw (but do sit down)

  4. Fly-off • You’ll first line up behind my two tables • One at a time, throw the airplane from behind my table at the back wall • If it hits the side walls, it is automatically out of the competition • Top two airplanes should remain on the floor • All others – Will be picked up and deposited in the trash can by the door

  5. Instructions for taking Cornell Notes • Use a ruler to put a Cornell Line on the next 4 Note pages (odd pages) in your INB • WriteGreen colored wordsto the left of the line • WriteWhite colored wordsto the right of the line • You do not need to write RedorBlackcolored words • Underline words that are underlined foremphasis

  6. Experimental Design Diagram (EDD) • Refer to the Experimental Design Diagram (EDD) Template • What does the EDD summarize? • Problem, Hypothesis, IV, Levels of the IV, Control, Number of Trials, DV, Constants and Materials List • Find the confines of the Modified EDD • What are the 4 parts of the Modified EDD? • IV , Levels of IV and Control, Numbers of Trials, and DV

  7. Experimental Design Diagram (EDD) • Once you know how to complete a Modified EDD, writing the Problem and Hypothesis becomes a lot easier • EDD Summarizes:Problem, Hypothesis, IV, Levels of the IV, Control, Number of Trials, DV, Constants, and Materials List • Modified EDD Summarizes:IV , Levels of IV and Control, Numbers of Trials, and DV • Use a highlighter to shade the Modified EDD • Please do not write on this template

  8. Draw and label aModified Experimental Design Diagram (EDD)on an Example Page Make it large enough to insert words -- when advised to • IV: • Levels of IV: • Numbers of Trials • DV: Control:

  9. What are constants? • Constants are all the conditions that remain the same in the experiment

  10. Problem • How can I modify the #2 airplane to have it fly further than the #1 airplane?

  11. Basic Concepts Action taken Purposely changed Response to change Remained same I D C Refold Add paper clips Add tape W C W F T S S T W What have we purposely changed ?

  12. Basic Concepts Action taken Purposely changed Response to change Remained same Independent Variable Dependent Variable Constant Refold Add P. clips Add tape Wing shape Weight of plane Center of gravity F T S S T W Who has purposely changed the Airplane and what is this Variable Called ?

  13. Basic Concepts Action taken Purposely changed Response to change Remained same IV Dependent Variable Constant Refolded Added clips Added tape Wing shape Weight of plane Center of gravity F T S S T W By making these changes, what are we trying to do ? Get the airplane to ________

  14. Basic Concepts Action taken Purposely changed Response to change Remained same IV Dependent Variable Constant Refolded Added clips Added tape Wing shape Weight of plane Center of gravity Distance flown Fly Longer Fly in a straight line S T W When we measure something what is this variable called?

  15. Basic Concepts Action taken Purposely changed Response to change Remained same IV DV Constant Refolded Added clips Added tape Wing shape Weight of plane Center of gravity Distance flown Fly Longer Fly in a straight line S T W What conditions have to remain the same and What are the conditions that need to remain the same called?

  16. Basic Concepts Action taken Purposely changed Response to change Remained same IV DV Constant Refolded Added clips Added tape Wing shape Weight of plane Center of gravity Distance flown Fly longer Fly in a straight line Size of paper Texture of paper Wt. of paper Draw and label this table on an Example Page

  17. Now fill in the following areas of the Modified EDD as they are discussed • IV: • Levels of IV: • Numbers of Trials • DV: Control:

  18. If we add paper clips, what are we changing? • IV: • Levels of IV: • Numbers of Trials • DV: Control:

  19. If we add paper clips, what are we changing? Weight of the Airplane • IV: • Levels of IV: • Numbers of Trials • DV: Control: What is the Control of this experiment?

  20. If we add paper clips, what are we changing? Weight of the Airplane • IV: • Levels of IV: • Numbers of Trials • DV: Control: No paper clips What are the other 2 Levels of IV?

  21. If we add paper clips, what are we changing? Weight of the Airplane • IV: • Levels of IV: • Numbers of Trials • DV: Control: 1 paper clip 2 paper clips No paper clips What is the minimum # of Repeated Trials?

  22. If we add paper clips, what are we changing? Weight of the Airplane • IV: • Levels of IV: • Numbers of Trials • DV: Control: 1 paper clip 2 paper clips No paper clips 5 5 5 What is the DV for this experiment?

  23. If we add paper clips, what are we changing? Weight of the Airplane • IV: • Levels of IV: • Numbers of Trials • DV: distance flown Control: 1 paper clip 2 paper clips No paper clips 5 5 5 What is the DV for this experiment?

  24. To State the Problem:It is written in a question format • Look at your EDD Template • Problem : What is the Effect of the _________ on the ____________ ? (IV) (DV) • Use your Modified EDD to write the Problem in the question format

  25. It should look like this Problem:What is the effect of the weight of the paper airplane on the (IV) distance flown_? (DV)

  26. Read the format for the Hypothesis • Hypothesis (H): • If the ___________is___________________ , (IV) (Pick 1 of the Levels of IV) “then the ________ will __________________ (DV) (Make your prediction) than the ________________________ . (State the other Levels of IV)

  27. First, insert the DV and IV into the hypothesis template • Hypothesis (H): • If the ___________is___________________ , (IV) (Pick 1 of the Levels of IV) “then the ________ will __________________ (DV) (Make your prediction) than the ________________________ . (State the other Levels of IV)

  28. Insert the DV and IV into the hypothesis template • Hypothesis (H): • If the weight of the airplane is________________ , (IV)(Pick 1 of the Levels of IV) “then the distance flown will _______________ (DV) (Make your prediction) than the ________________________ . (State the other Levels of IV)

  29. Insert 1 of the Levels of IV into the hypothesis template • Hypothesis (H):If the weight of the airplane is (IV) __________________________ , (Pick 1 of the Levels of IV) “then the distance flown will ________________ (DV) (Make your prediction) than the ______________________ (State the other Levels of IV)

  30. Now make your prediction what will happen into the hypothesis template • Hypothesis (H): • If the weight of the airplane is 1 paper clip , (IV) (Pick 1 of the Levels of IV) “then the distance flown will _________________ ( DV) (Make your prediction) than the ______________________ (State the other Levels of IV)

  31. Finish the template off by stating the other Levels of IV • Hypothesis (H): • If the weight of the airplane is 1 paper clip , (IV) (Pick 1 of the Levels of IV) “then the distance flown will fly further ( DV) (Make your prediction) than the ______________________ (State the other Levels of IV)

  32. Write the finished Hypothesis (remember to underline and label) • Hypothesis (H): • If the weight of the airplane is 1 paper clip , (IV) (Pick 1 of the Levels of IV) “then the distance flown will fly further ( DV) (Make your prediction) than the no paper clips or 2 paper clips (State the other Levels of IV)

  33. Draw and label the following Modified EDDon another Example Page Amount of Liquid Fertilizer • IV: • Levels of IV: • Numbers of Trials • DV: height of a bean plant Control: No fertilizer (Water Only) 2 mL 6 mL 5 5 5

  34. Now write out the complete Problem and Hypothesis using the Modified EDD: • Problem : • What is the Effect of the _____ on the ______ ? (IV) (DV) • Hypothesis (H): • If the ___________is___________________ , (IV) (Pick 1 of the Levels of IV) “then the ________ will __________________ (DV) (Make your prediction) than the ________________________ . (State the other Levels of IV)

  35. Now write out the complete Problem using the Modified EDD: • Problem : • What is the effect of the amount of fertilizer (IV) on the height of a bean plant ? (DV)

  36. Now write out the complete Hypothesis using the Modified EDD: • Hypothesis (H): • If the amount of fertilizer is ___2 mL____ , (IV) (Pick 1 of the Levels of IV) “then the height of the bean plant will be taller ( DV) (Make your prediction) than no fertilizeror 6 mL . (State the other Levels of IV)

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