I suggest using Google Shortener to create shortened web address you can share with your students. Watch the short video below to see how easy it is to use Google Shortener.
Extra bonus! You can see how many times your shortened links have been clicked on or accessed after you share them.
Another Extra Bonus!! Click on 'Details' next to a shortened web address in the list of all your shortened web addresses and you can get a graph of the number of times the site was accessed and you get a QR code that will also go to the site that was your destination. Great way to create a link off of posters! Students can scan the QR code to get to the site.