Objectives:

1. I know the names and the purpose of common lab equipment.

2. I know how to read an analog measuring device with the correct number of significant figures.

3. I know that scientist always do three calculations at once:

   —> they calculate the meaning using units,

   —> they calculate the value using numbers,

   —> and they calculate the quality using significant figures.

4. I know how to set up a dimensional analysis calculation that include:

   —> unit conversions,

   —> relationships such as density, LD50, and concentration,

   —> percent, ppm, ppb,

   —> and unit conversions with squared or cubed units.

5. I know how to use density to identify substances.