The Scientific Method Using Plant Experiments to discover the Scientific Method.

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Post on 21-Dec-2015

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  • Slide 1
  • The Scientific Method Using Plant Experiments to discover the Scientific Method
  • Slide 2
  • Types of Plant Experiments Plus or Minus Treatment With or without Dose-Response Study Variation in amount Factional Experiment Two variables Comparative Experiment Plant species vary
  • Slide 3
  • Using the Scientific Inquiry Method Plant a Question Sprout a Guess Design a Growing Experiment Identify independent variable Identify dependent variable Record Fruitful Observations Harvest Conclusions
  • Slide 4
  • Using Experimental Design Methods Brainstorming - Four Question Strategy Experimental Design Diagrams Determine Procedure Conduct Experiment Record Results Analysis of Results Conclusion
  • Slide 5
  • Four Question Strategy 1) What materials are readily available for conducting experiments on ? 2) How do act? 3) How can I change a set of _ materials to affect the action? 4) How can I measure how ______ respond to the change?
  • Slide 6
  • What materials are readily available for conducting experiments on PLANTS? Plants Soil Fertilizers Water Light Containers
  • Slide 7
  • How do PLANTS act? Grow Reproduce Produce oxygen Produce sugar Produce fruit
  • Slide 8
  • How can I change a set of PLANT materials to affect the action? Plants Soil Fertilizers Water Light Containers
  • Slide 9
  • How can I measure how PLANTS respond to the change? - Count the number of leaves - Measure stem length - Determine growth rate - Count the number of flowers - Mass of fruit produced - Measure the diameter of the stems - Measure chlorophyll absorption
  • Slide 10
  • Select Variables Independent Variable - change (#3) - limit to one variable - all other variables are constants Dependent Variable - measure (#4) - limit to one variable
  • Slide 11
  • Experimental Design Diagram Title: The effect of (IV) on the (DV). Hypothesis: If (IV), then the (DV), will... Independent Variable: Dependent Variable: Constants: ControlVariation IVariation IIVariation III # of Trials# of Trials# of Trials# of Trials
  • Slide 12
  • Example I Title: The effect of the amount of fertilizer on the height of bean plants. Hypothesis: If different amounts of fertilizer is applied, then the bean plants will vary in height.
  • Slide 13
  • No Fertilizer5% Fertilizer10% Fertilizer 15% Fertilizer 15 plants15 plants15 plants15 plants Independent Variable: Dependent Variable: Height of Bean Plants in Centimeters Constants: Amount of water, light, soil, temperature, humidity, etc.

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