In this session, you will begin to explore the questions "What can be measured?" and "What does it mean to measure something?" You will identify measurable properties of objects such as weight, surface area, and volume, and discuss which metric units are appropriate for measuring these properties. You will also learn that measurement is, by its nature, approximate. Finally, you will consider how to make measurements using nonstandard units.

For the list of materials that are required and/or optional in this session,
see Note 1.

Part A:	Comparing Rocks
Part B:	Which Rock Is the Largest?
Part C:	Nonstandard Units
Part D:	Summing It Up
Homework

In this session, you will do the following:

Begin exploring why measurement is always approximate

Learn how to identify measurable properties as well as the metric units that are most appropriate for measuring these properties

Use and learn about different methods for measuring, such as displacement

Explore the advantages of using standard units when measuring

Throughout the session you will be prompted to view short video segments. In addition to these excerpts, you may choose to watch the full-length video of this session.

New in This Session:

measurable properties
measurement
precision
surface area

unit
volume
weight

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