1. Understanding precision and measuring
The Metric Ruler
Understanding precision and measuring

2. Using a Metric Ruler WITH a VISIBLE 0 MARK
Example 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 cm
Length = cm

3. To obtain the most ACCURATE RESULTS, never forget the most important rule:
Always read your measurement one place more than the precision of the ruler. This ruler has a precision of .1 cm so measure to the .10 cm at least.

4. Using a Metric Ruler WITH a VISIBLE 0 MARK Example 21 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 cm
Length = 8.00 cm

5. Using a Metric Ruler WITHOUT a VISIBLE 0 MARK Example 1cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Length of bar cm – 1.00 cm = cm

6. Using a Metric Ruler WITHOUT a VISIBLE 0 MARK Example 2
Length of Bar – 1.0 = 10.0 cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

7. Estimating Digits While Measuring Objects Example 12 3 4 5 cm 6
3.20
3.30
Length of Bar = 3.23 cm

8. Estimating Digits While Measuring Objects Example 2
8.0 cm
9.0 cm
Length of Bar = 8.8 cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 cm