### 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: Operations with Scientific Notation