Scanning is used to find a particular piece of information.
Run your eyes over the text looking for the specific piece of information you need.
Use scanning on schedules, meeting plans, etc.
in order to find the specific details you require.
If you see words or phrases that you don't understand, don't worry when scanning.
Examples of Scanning
The "What's on TV" section of your newspaper.
A train / airplane schedule
A conference guide