simple machine lab grading
v Title–descriptive (-1)
v Problem statement/question- present (-1)
v Hypothesis- 2 (-1 each) if then because form (-1)
v Procedure
Ø Materials list (-1)
Ø Step by step with sufficient detail (-1 each part)
Ø Specific values listed for manipulated variable (-1 each part)
Ø Specific values listed for controlled variables (-1 each part)
Ø Record data as step (-1)
v Data
Ø Data tables
§ Title (-1)
§ Labels – physical quantity and units (-1)
§ Significant digits ( –1)
Ø Sample calculations- formula (-1) numbers plugged in (-1)
v Interpretation
Ø Trend analysis
§ Incline plane -how did height(steepness) change Wo, Wi, IMA, MA, Eff.
§ What caused the trends noted above
§ Repeat for pulleys
Ø Error analysis
§ Multiple trials above 100% or below 70% (-10)
§ Discuss data that has errors (-1)
§ Sources of error at least 2 non specific human error not acceptable (-1)
v Conclusion
Ø Did data support hypothesis with hypothesis restated in some form (-1 each time)
Ø Specific data supporting above statement (-1 each time)