Aim: How do scientists use the scientific method to solve a problem? Do Now: 1) Take out the homework questions 1-5.

What is the Scientific Method? A step by step problem solving procedure based on gathered evidence rather than what you believe.

State the problem Form a Hypothesis Perform Experiments Collect Data Form a Solution or Conclusion Repeat the experiment Steps of the Scientific Method

Steps of the Scientific Method: S.H.E.D.S Repeat Copy the following:

The scientific method always includes the following: Hypothesis: Prediction or an educated guess. Variable: Factor being tested. Control: used for comparison. Constant: factor that stays the same

There are 2 kinds of variables. What are they? Dependent Variable Independent Variables

Independent Variables- these variables are changed by you Independent Variables- these variables are changed by you. Why is the independent variable changed? To study what happens to the dependent variable.

*These variables depend on something else Dependent Variable- this variable responds to changes in the independent variable. *These variables depend on something else

You are testing the affect of the independent variable on the dependent variable!

An observation is the perception of something with our senses. Observations & Inferences An observation is the perception of something with our senses.

An inference uses observations to form an explanation, determine a cause, or draw a conclusion.

Observation or inference? A weatherperson looks at a weather map and predicts a storm is coming. Observation or inference?