1. September 14, 2015 Agenda 1. Turn in SpongeBob Variables homework if you have not done this yet 2. Marble lab Partner Discussion In your own words, explain the difference between the manipulated (independent) variable and the responding (dependent) variable. Goal Be able to explain the difference between a manipulated variable and a responding variable. Homework SpongeBob lab – part 2 (prelab questions a-e))

3. Variables: All of the parts of your experiment What are some variables in this experiment??? Manipulated variable: The thing you change or manipulate (the thing you mess with) Responding variable: The thing you measure in the end Controlled variables: All the things you keep the same throughout the experiment