Please see my portaportal for a full rundown of resources.
http://guest.portaportal.com/gottscience
Vocabulary flash cards: http://quizlet.com/11935299/nys-4th-grade-science-vocabulary-flash-cards/
Glossary (with pictures and definitions) click on pull down at top right to view words from different grade levels the link I have added takes you straight to grade 4 glossary: http://www.harcourtschool.com/glossary/science/index4.html
Who wants to be a millionaire game: http://www.quia.com/rr/85291.html
More vocabulary (list): http://www.quia.com/jg/1336508list.html