Aim: Scientific Investigations Enter Date Warm-up: Students want to test the speed of skateboards on different surfaces. What is the independent & dependent variables? HW:

Scientific Method Answering questions & solving puzzles in an organized way

Step 1 -Identify Problem Step 2 – Make a Hypothesis Step 3 – Experiment to Test Hypothesis Step 4 – Analysis & Organize Data Step 5 - Conclusion

Step 1 Identify the problem Begins with an observation Written in the form of a question

Step 2 Formulate a Hypothesis An EDUCATED guess If … Then… statement

Practice Rewrite the following observation into a formalized hypothesis Bounty absorbs more water than other brands. If Bounty is more absorbent, then it will soak up more water than other brands.

Experimental (Variable) Group Step 3 Design experiment to test the hypothesis Experimental (Variable) Group Test group One factor is changed

Standard everything else is measured against Controlled Group Standard everything else is measured against Nothing is changed Ex: placebo or sugar pill

Step 4 Collecting and organizing data Reflected in a table, graph, or chart

Step 5 Conclusion Support or reject your hypothesis based on your results (findings)

Scientific Method, Grail Style http://www.youtube.com/watch?v=GUQUqV0_PTc