A great many students see the prospect of writing an essay as intimidating. For a lot of students, getting started seems to pose the greatest obstacle. If you ask them verbally, What do you want to say?  What do you want to talk about?  What ideas and examples would you use? You can usually get some sensible responses. But when it comes to arranging these pieces, to organising them, students falter. 
Here then is a straight-forward approach which you will helps many students get over this hump and with practice, builds the confidence for them to approach any essay with a plan of attack. 
ESL students also find this extremely useful.