The-Scientific-Method--Mount-Gilead-Schools-District：科学的方法-基列山学校区-精品课件.ppt

1、The Scientific MethodDecember 2019Bell Work 1.What are the 5 steps of the scientific method process?2.What is an independent variable?3.What is a dependent variable?Scientific MethodScientific Method-A series of steps that scientists and 7th graders use to answer questions and solve problems The sci

2、entific method is a logical,problem solving techniqueSteps of the Scientific Method 1.Make an Observation/Ask a question 2.Write a Hypothesis 3.Make Predictions4.Perform Experiments/Data Collection 5.Conclusion Statement Observation1st Step in the Scientific Method Process 1.An observation is someth

3、ing you can see or prove 2.An inference is an opinion,or conclusion,based on observed factsObservation vs.Inference ObservationObservationInferenceObservation vs.InferenceObservation2.Observation3.InferenceObservation vs.InferenceObservationObservationInferenceWrite a Hypothesis2nd Step in the Scien

4、tific Method Process Hypothesis-Possible explanation or answer to a question“What do you think is the answer to your question or the reason for your observation”3rd Step in the Scientific Method ProcessMake Predictions Prediction Statement of what may happen in the future“What are some if/then state

5、ments that explain and confirm your hypothesis”PredictionsIf the cows are warned a car is coming,then they will stop talking and act like cows.PredictionsIfthen.PredictionsIfthenPerform Tests or Experiments4th Step in the Scientific Method Process“What will you do to test your predictions?”-1.Collec

6、t Data-2.Find out if your hypothesis is or is not correct.State Your Conclusions5th Step in the Scientific Method Process 1.“What did your experiment show?”2.“Did your experiment confirm(prove right)your hypothesis?”3.Application“How does this apply to everyday life?”Science Vocabulary1.Bias-To infl

7、uence in an unfair way 2.Analyze-Consider the detail and subject in order to discover the meaning.To look at the results and find meaning.3.qualitative-observations made with your senses and not numbers4.quantitative-observations that include amount or numbersNote Cards 1.Make note cards(study cards

8、)5 steps of Scientific Method Bias AnalyzeIndependent,Dependent,and Controlled Variables 1.Independent,dependent,and controlled variables are tools used in an experiment to track what is going on 2.Allow you to have control over your experiments 3.Allows you to measure your results and draw accurate

9、 conclusionsIndependent Variable1.What you change or control in an experiment-You can only have one independent variableDependent Variable-1.What you measure in an experiment-2.You can have more than one dependent variableControlled Variables1.Any other conditions in an experiment2.Must remain const

10、ant or the sameControl Group A group in an experiment that is not tested or effectedExamples Fast-food experiment PlantScientific Method ReviewSongAsk a Question or Make an ObservationWrite a HypothesisMake PredictionsPerform Experiments/Tests-Collect DataState Your ConclusionsJamals ResultsConcrete

11、(distance)Asphalt(distance)Trial 1Trial 2Trial 3Trial 4Average DistancePracticeThe Jones put a real Christmas tree up in their home each year.This year they dont know what species of tree to buy because they want a tree that smells good,keeps its needles and stays fresh the longest.They go to the lo

12、cal Christmas tree farm to cut down their tree.The Christmas tree farm has performed their own trial this year,and a month ago cut a blue spruce,Douglas fir,and white pine and placed them in water and displayed them outside the store.This allowed customers to view the trees,feel the needles,and see

13、how the different coniferous trees held their needles and smelled.What is the independent variable?What are the dependent variables?List some controls the Christmas tree farm would need to do in order for their results to be more valid.What could the farm have down differently to increase the“validi

14、ty”of their experiment.Bell WorkTrue or False1.Independent variables affect dependent variables.2.The experimental group is the group that is tested during an experiment.3.Name the 5 steps in orderBell WorkWhich variable remains constant?Which variable do you measure and have no control over?Which v

15、ariable to your control?Bell WorkTrue or False1.To analyze means to consider the detail and subject in order to discover the meaning.2.It is okay to have bias when performing scientific experiments.The experimental group is the one being tested in an experiment.3.The control group is used to compare results to the experimental group in an experiment.