How do I create a timed webpage?

[AznAnarchy99]

For example, I want people to read some class material, but they can't move onto the next page until a certain time limit is hit. Im using wordpress right now so if someone knows something that'll fit my needs that'd be great.

 

[GregGreen]

You could hide (set display to none or visibility to hidden) the next page button on document ready, set a timer, then unhide the the button when the timer expires using jQuery.

Something like:
$('yourselectorhere').slideUp().delay(how long you want to wait in milliseconds).slideDown();