IV (Independent Variable): the Factor You Want to Control/Change

Catapults & the Scientific Process Observations:

What data can you collect that may show a mathematical relationship?

Round 1:

IV (Independent variable): The factor you want to control/change.

DV (Dependent variable): The variable that may respond to your independent variable.

Hypothesis:

Constants: The factors/variables you keep the same during the experiment.

Experimental Procedures:

______Data Table

Distance traveled ( ) Load 1 2 3 4 5 6 7 8 9 10 Mass

Qualitative Observations: Place to note trials that have errors. Round 2:

IV (Independent variable): The factor you want to control/change.

DV (Dependent variable): The variable that may respond to your independent variable.

Hypothesis:

Constants: The factors/variables you keep the same during the experiment.

Experimental Procedures:

______Data Table

Distance traveled ( ) Lever 1 2 3 4 5 6 7 8 9 10 Length

Qualitative Observations: Place to note trials that have errors. Analyzing data: GRAPH EACH OF THE ROUNDS ON DIFFERENT GRAPHS.

Graph your data using the following graphing criteria:  On graph paper  Title at the top (DV versus IV)  Graph takes up most of page.  X axis labeled with the IV (independent variable)  Levels/types of the IV identified on axis & evenly spaced if appropriate.  Y axis labeled with the DV (dependent variable)  Numbers along the Y axis evenly spaced.

Conclusions: In paragraph form answer the following.  Describe whether each of your hypothesis was supported or rejected by your data.  Give a 1 sentence summary of how you tested your hypothesis.  Describe your graphs as either linear or non-linear.  Provide a reason for the results you saw.  Explain any errors/difficulties you had during your experiment.