Gear Making.

Okayyyyyy, I think this gear exercise is relatively easier. Here are my working images.

First i selected te face option.

And selected the alternative faces

I scaled it's width using the extrude option

and also the lenght.

And using the extrude, i pulled out the highlighted faces

Voila!

Reflection: I feel that this exercise is quite easy but i learnt something useful through this exercise, Which is Backward Culling, Which helps us not to select unseen faces, edges and vertices at the back of the object.