Occasionally, students may be required to write essays on technology and consider its relationship to various aspects of their lives. 

· What are some of the advantages of using technology in classrooms?

· What are some of the trade-offs or disadvantages of using technology in classrooms?

· Will learning portals like Khan Academy be an adequate substitute for a teacher?

· Do you think technology will one day replace a physical classroom? Why or why not?

The distinction between the indefinite articles, ‘a’ and ‘an’, may seem easy, but students sometimes confuse the two in their writing.

We have all learnt the simple rule the ‘a’ is used for words that begin with a consonant, and ‘an’ is reserved for words that begins with a vowel. 

However, there are a few notable exceptions, for example:

· A university
· A one-day event
· An hour ago
· An FBI agent

Rather than think of them as exceptions, it is better to refine our rule thus: whether to use ‘a’ or ‘an’ depends on the sound at the start of the following word. 

If it is a consonant but sounds like a vowel (e.g. ‘hour’, ‘FBI’), then use ‘an’.
Likewise, if it is a vowel but sounds like a consonant (e.g. ‘university’, ‘one’), then use the indefinite article, ‘a’.