1. Making accurate and precise measurements

2.  The metric system (AKA International System of Units or S.I.) is a measuring system based on units of 10. Units in the S.I. are:  meter (m), which is used for measuring length.  liter (l), which is used to measure volume.  gram (g), which is used to measure mass.

3. Kilo (k) Hecto (h) Deka (de) or deca (da) Base (m, l, or g) Deci (d) Centi (c) Milli (m) 1000 100 10 1 0.1 0.01.001 1000/1 100/1 10/1 1 1/10 1/1001/1000

4. 1. Begin on the 1cm mark and make your recording. 2. Subtract 1 from the number your recorded to get your answer. For example: 1.5cm - 1.0 cm = 0.5 cm  Make sure you include 1 digit after the decimal. This is usually an estimate.

5.  3.85 cm - 1.0 cm = 2.85 cm

6. 1. Place the graduated cylinder on a flat surface. 2. Read from the bottom of the meniscus (bubble) at EYE LEVEL. 3. Again you want to estimate.

7. 1. Move all sliders to the left. 2. Check to see if the mark on the moving arm lines up with the 0 on the balance. 3. Place specimen on pan then move the sliders until the marks line up at 0.