Taiwo,

The major reason why your adsense ads are not getting clicked is:

You're not positioning your ads where the visitors attention is.

I suggest you to change your ads position for better CTR.

- Put 728x90 leaderboard ads below your navigation bar
- Put 300 x 250 medium rectangle ad inside your individual blogpost.

If you simply make these changes, I'm sure it will help you improve your CTR.

Make sure you follow the google guidelines on the number of adsense ads you are allowed to put on a single post or page.

Have a great time :-)