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Learning Math Home
Measurement
 
Session 2 Part A Part B Part C Homework
 
Glossary
measurement Site Map
Session 2 Materials:
Notes
Solutions
Video

Session 2: Measurement Fundamentals
 

In Session 1, you began to explore what it means to measure. In this session, you will investigate the difference between a count and a measure and examine some of the important ideas essential to meaningful measurement. You will learn about the many uses of ratio in measurement and how scale models can help us understand relative sizes. Finally, you will investigate the constant of proportionality in isosceles right triangles and learn about precision and accuracy in measurement.

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

In This Session:

Part A:

Measuring Accurately

Part B:

The Role of Ratio

Part C:

Precision and Accuracy

Homework

 


 
Learning Objectives

In this session, you will do the following:

• 

Understand the three components of measuring: conservation, transitivity, and unit iteration

• 

Consider the effects of partitioning a unit into smaller subunits

• 

Understand the use of proportional reasoning and ratio in measurement situations

• 

Use accuracy and precision to determine how much error is involved in any given measurement


video icon

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.

Keyterms

Previously Introduced:

New in This Session:

 

measurement
precision

accuracy
compensatory principle
conservation
partitioning
ratio
scale
scale factor
transitivity
unit iteration

Next > Part A: Measuring Accurately

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