Metric Olympics - Frederick County Public Schools
Metric Olympics
Name:________________________________________________Block:_____Date:___________
Purpose: To practice measuring in metric units.
To compare an estimate to an actual measurement using percent error.
To convert between units of the metric system
Procedure:
At each station, you will be asked to make an estimate of a measurement and then to actually take the measurement. Each station is equipped with the materials you will need to perform the measurement as well as a card of directions. Follow these directions.
Data:
Event Estimate Actual % error
|Sponge Squeeze | | | |
| |mL | | |
| | | | |
|Straw Javelin Throw | | | |
| |cm | | |
| | | | |
|Paper Plate Discus | | | |
| |cm | | |
| | | | |
|Cotton Ball Shot Put | | | |
| |cm | | |
| | | | |
|Marble Grab | | | |
| |g | | |
| | | | |
|Foot Measurement | | | |
|(without shoe) |cm2 | | |
| | | | |
|Water Temperature | | | |
| |°C | | |
| | | | |
|Stride | | | |
| |m | | |
| | | | |
|Mass of a Penny | | | |
| |gm | | |
| | | | |
|Volume of a Marble | | | |
| |mL | | |
| | | | |
How “good” was your estimate to the actual measurement? One way to compare is to calculate the percent error. Percent error is percent that relates the estimate to the actual value. It can be used as means to see how “good” your estimate is.
To calculate percent error: Estimated Value – Actual Value / Actual Value X 100
Determine the % error for each event in your data table. SHOW ALL MATH !.
Make the following conversions: SHOW ALL MATH !
Event Actual Conver to:
|Sponge Squeeze |mL | |
| | |L |
|Straw Javelin Throw |cm | |
| | |km |
|Paper Plate Discus |cm | |
| | |mm |
|Cotton Ball Shot Put |cm | |
| | |m |
|Marble Grab |g | |
| | |mg |
|Foot Measurement |cm2 | |
|(without shoe) | |m2 |
|Water Temperature |°C | |
| | |K |
|Stride |m | |
| | |cm |
|Mass of a Penny |g | |
| | |kg |
|Volume of a Marble |mL | |
| | |cm3 |
1. State the rule:
a. When converting from a LARGER unit to a smaller unit, you ___________________
(divide or multiply)
b. When converting from a smaller unit to a LARGER unit, you ___________________
(divide or multiply)
2. It is possible to make conversions by simply moving the decimal point.
a. When convering from a LARGER unit to a smaller unit, you move the decimal point
from _________________ to _________________.
b. When converting from a smaller unit to a LARGER unit, you move the decimal point
from _________________ to _________________.
................
................
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