Lesson 1

Discover

 

In the Focus section, the importance of avoiding measurement errors was emphasized so that you could avoid costly mistakes. In Try This 1 you will practise some of your measurement skills with a variety of measurement tools.

 

Try This 1

 

Open Measurement and choose an object to measure.

 

Measure at least three objects with each of the measurement tools. Summarize your findings in a table similar to the following. Highlight the best measuring device for each object and the measurement found.

 

If you are having trouble using the Measurement interactive, follow the instructions provided in How To Use the Measurement Interactive.

 

Measurement Tool	Object	Measurement
Metre Stick
30-cm Ruler
30-cm Tape Measure
Vernier Caliper
Micrometre

 

Save your responses in your course folder.

 

Share 1

 

With a partner or in a group, discuss what objects you measured and what measurement tools you used from Try This 1. Then answer the following questions.

1. When is a smaller scale division more appropriate?
2. When is a larger scale division more appropriate?
3. Which device(s) would you choose to use to measure the length of a hallway?
4. Which device(s) would you choose to use to measure the diameter of a pencil?
5. When would it be more appropriate to use the vernier caliper rather than a tape measure?

If required, place a summary of your discussion in your course folder.