> 
> Often taking a prominent position over a whiteboard or across a wall,
>  timelines are one of the most commonplace classroom tools used to
>  teach history. They present a concise chronology with dates and events
>  listed in a linear narrative, forming a skeletal story of history.
> 
> 
> Despite their usefulness in allowing students to gain a cursory
>  knowledge of many key moments in the past, their bare-bones,
>  fact-centered structure is symptomatic of the myopic character of
>  curricula that emphasize the What, When, and Who and eclipse the
>  significance of Why and How.
> 
> 
> 

can anybody kindly simplify this sentence ?