Brain Pop
https://www.brainpop.com/
Kahoot
https://kahoot.it/#/
No Red Ink
https://www.noredink.com/
Vocab.com
https://www.vocabulary.com/
Story Starters
http://www.scholastic.com/teachers/story-starters/
Word Games
http://www.wordgametime.com/grade/6th-grade