Agenda for Wednesday Dec 3 rd Notebook set-up Pre-test Learning Targets Scientific Method.

Agenda for Wednesday Dec 3rd • Notebook set-up• Pre-test• Learning Targets• Scientific Method

Bio Resources

www.glencoe.com/ose/ Access Code: CCF2754895

• Novak’s teacher website

http://www.glencoe.com/ose/

Questions

What is science?

Why do we do science?

How do we do science?

The Scientific Method involves a series of steps that are used

to investigate a natural occurrence.

Problem/QuestionObservation/Research

Formulate a HypothesisExperiment

Collect and Analyze ResultsConclusion

Communicate the Results

Steps of the Scientific Method

1. Problem/Question: Develop a question or problem that can be solved through experimentation.


2. Observation/Research: Make observations and research your

topic of interest.


3. Formulate a Hypothesis: Predict a possible answer to the problem

or question.Example: If soil temperatures rise,

then plant growth will increase.


4. Experiment: Develop and follow a procedure.

Include a detailed materials list.

Experimental Design• Control group – used for comparison, baseline

– may be a “no treatment” group– exposed to the same conditions as the experimental

group, except for the variable being tested– All experiments should have a control group.

• Experimental Group – group that gets tested• 1 factor changes at a time

•Many trials

Experimental Design• Independent (manipulated) variable – a factor

that’s intentionally varied by the experimenter– tested factor

• Dependent (responding) variable – the factor that may change as a result of independent variable

• depends on the outcome of the independent variable• What you want to measure

• Constant – remains same in every test experiment

Data• Information gathered during an experiment

– Qualitative – observations

– Quantitative – numbers


5. Collect and Analyze Results: Modify the procedure if needed.Confirm the results by retesting.

Include tables, graphs, and photographs.


6. Conclusion: Include a statement that accepts or rejects the

hypothesis.Make recommendations for further

study and possible improvements to the procedure.


7. Communicate the Results: Be prepared to present the project.

Paper, presentations

Think you can name all seven steps?

Problem/QuestionObservation/ResearchFormulate a HypothesisExperimentCollect and Analyze ResultsConclusionCommunicate the Results

What is difference between hypothesis, theory & law?

Hypothesis - “an educated guess”; a tentative explanation of phenomena.

Theory - a widely accepted explanation of natural phenomena; has stood up to

thorough & continual testing.

Law - a statement of what always occurs under certain conditions.

Hypotheses, Theories, Laws

• hypothesis – a suggested explanation• a proposal based on reason that predicts a

possible correlation between multiple phenomena (incidents, events, observations, etc.)

Laws

• law – notes only that something happens• happens consistently and across the universe• frequently can be stated mathematicallyExample:• Newton’s 2nd Law: f=ma

Theories• theory – notes why something happens;• explains why laws and facts are true• A framework about a class or group of

phenomena• Theories are never “proven” – confirmed by

overwhelming data; all theories, like all ideas in science, are subject to correction

Inferences and deduction

• Inference - using observations, prior knowledge/experiences, and details from context to make connections and come up with idea

• Deduction – make a conclusion from something known or assumed

Mr. Novak is working on a science project. His task is to answer the question: "Does Plantgro (a commercial plant product) affect the speed of plant growth".

Q: Describe how Mr. Novak would perform this experiment. Identify the control group, and the independent and dependent variables in your description.

Agenda for Tuesday Dec 10th 1. Finish notes2. Start pendulum lab Quiz Friday

Define qualitative, quantitative, independent variable, and dependent variable.

Agenda for Thursday Dec 12th 1. Go over worksheets2. Finish pendulum lab

Pendulum labProblem: How can you get the most swings in a

minute?

Materials: string and 10 washers (weight)

Even lab groups = how does weight affect number of swings?

Odd lab groups = how does string length affect number of swings?

Agenda for Wednesday Dec 3 rd Notebook set-up Pre-test Learning Targets Scientific Method.

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