### By the end of this unit students will be able to:

• Know the metric base units for time, temperature, length, mass, and volume.
• Identify and use SI prefixes (mega, kilo, deci, centi, milli, micro, nano).
• Describe the difference between accuracy and precision.
• Read measurement devices in the laboratory environment and estimate to the correct digit.
• Determine which digits in a measurement are significant.
• Set up a line graph, placing the independent and dependent variables on the appropriate axis.
• Convert small decimals and large whole numbers to scientific notation and vice versa.
• Round a calculated value to the appropriate number of significant figures.
• Use the formula for percent error including identifying the actual and experimental values.
• Label all answers with the proper unit.
• Solve the density equation for density, mass, and volume.

Explore Density, Mass & Volume at PhET

Video: Metric & Double Conversions

Video: Scientific Notation

Video: Operations with Scientific Notation

Video: Unit Conversions with Cubed Units

Video: Dimensional Analysis