# Length Lab

## Procedure:

- In your journal, make a data table 1, 2 and 3, and write down the questions.
- Using a meter stick, complete data table 1 and 3.
- Using the meter stick and a string complete data table 2.
- Answer the analysis questions.

## Data Table 1 - Rectangular Objects:

Object | meters | cm | mm |
---|---|---|---|

Length of chalkboard | |||

Width of chalkboard | |||

Length of bulletin board | |||

Width of bulletin board | |||

Length of desk | |||

Width of desk | |||

Height of desk | |||

Height of classroom door |

## Data Table 2 - Irregularly-shaped objects:

Object | meters | cm | mm |
---|---|---|---|

Circumference of your wrist | |||

Circumference of your lower arm at its widest point | |||

Circumference of your upper arm at its widest point | |||

Circumference of a test tube |

## Data Table 3 - the Floor Space of the Room:

Length (meters) | |

Width (meters) | |

Length (counted by number of floor tiles) | |

Width (counted by number of floor tiles) | |

Length of one floor tile (cm) | |

Width of one floor tile (cm) |

## Analysis Questions:

- Which metric unit (km, m, cm or mm) is most appropriate for expressing the length and width of the classroom? Why?
- Which metric unit (km, m, cm or mm) is most appropriate for expressing the thickness of a nickel? Why?
- Why is it easier to convert meters to centimeters than to convert yards to inches?
- How would you measure the distance around a jigsaw puzzle piece?
- Calculate the length and width of the classroom (in meters) from the size of one floor tile. Show your calculations!
- Which do you feel is more accurate: the room size measured by the meter stick or the room size calculated from the measurement of one floor tile? Why ?