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Published byHenry Peter Lang Modified over 9 years ago
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How do we solve problems in science? Scientific Inquiry & Experimental Design
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The scientific method… State the problem Form a hypothesis Procedure Results Conclusion Let’s have a more in depth look at what scientist actually use and more scientific terminology.
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Experimental Design vs. Scientific Method Experimental DesignScientific Method Research Question Formulating Hypothesis Careful Observation Data Gathering Analysis of Data Identifying patterns in the data State the problem Form a hypothesis Procedure Results Conclusion
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Types of Experimental Design Different research questions require different experimental designs. Descriptive Investigations Experimental Research Design
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Descriptive Investigations An investigation used to explore questions in environmental conditions you cannot control. Ex. Jane Goodall’s study of chimpanzees. Picture hyperlinked to: www.janegoodall.org/media/videos A hypothesis is not required in these investigations.
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Experimental Research Design Can be used when focused on a single variable. Conditions can be controlled. Determines the cause of a problem. Ex.: Thumb Wars
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Experimental Research Design: Thumb Wars 1. Research Question 2. Hypothesis 3. Gathering Data 4. Data Analysis Patterns in the data 5. One variable tested: thumb length
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Experimental Research Design Research Question: Do plants grow better in coke or water?
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Do plants grow better in coke or water? Research Question: Do plants grow better in coke or water? Hypothesis Ex: Plants will grow better in water because plants need water to live. Gathering Data: Controlled experiment with one independent variable. Independent Variable: Type of liquid given to plants Dependent Variable: Measured growth of each plant Constants: Conditions kept the same (such as amount of liquid, type of plant, soil, amount of sunlight)
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Do plants grow better in coke or water? (cont.) Analysis of Data : Using graphs/tables to find trends in the data.
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