Lesson 3

1. Lesson 3

Mathematics 30-3 Module 6

Module 6: Measurement

Lesson 3: Tolerances

Focus

This is a photograph of a machining lathe that is turning steel in a manufacturing plant.

iStockphoto/Thinkstock

Many industries use mass production methods that require parts and components that are made in different shops and possibly overseas. When a machinist is asked to build a part for an engine, the measurements of the part will need to be within a range of acceptable values so it will fit correctly. This idea connects directly to the idea of tolerances.

Lesson Outcomes

At the end of this lesson you will be able to

demonstrate an understanding of tolerance
apply tolerance to different situations involving measurement

Lesson Questions

You will investigate the following questions:

How is tolerance applied in different situations?
Why is there a need for tolerance in manufacturing?
How is tolerance related to precision?

Assessment

Your assessment may be based on a combination of the following tasks:

completion of the Lesson 3 Assignment (Download the Lesson 3 Assignment and save it in your course folder now.)
course folder submissions from Try This and Share activities
additions to Glossary Terms
work under Project Connection