Click on biographies - choose explorers - then click on Christopher Columbus.
http://auth.grolier.com/login/bookflix/login.php
Choose People and Places. Click on Christopher Columbus (on last page) read the nonfiction book and complete the online activities - word match and explore the web - the bbc website video and quiz.
http://www.brainpopjr.com/socialstudies/holidays/columbusday/preview.weml
https://www.brainpop.com/socialstudies/famoushistoricalfigures/christophercolumbus/