Writing-Prefix, Plural Nouns

Suffix Practice Quizzes
http://www.manatee.k12.fl.us/sites/elementary/palmasola/wordend.htm

Prefixes Say Plenty Slideshow
http://www.tv411.org/lessons/cfm/vocabulary.cfm?str=vocabulary&num=1&act=1

Irregular Plural Concentration
http://www.manythings.org/wbg/irr_plurals1-mw.html

Irregular Noun Plural Practice
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/irrplu1.htm

Suffixes Say Plenty Slideshow
http://www.tv411.org/lessons/cfm/vocabulary.cfm?str=vocabulary&num=10&act=1

Types of Irregular Plurals with Interactive exercises
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/irrplu.htm

Prefix Practice
http://www.manatee.k12.fl.us/sites/elementary/palmasola/prefixesk2.htm

Plural -s or -es
http://www.harcourtschool.com/activity/language_arts/goforgold/content_builder/dswmedia/g2c8/nadia.htm

Maggies Suffix Prefix Game
http://www.missmaggie.org/scholastic/shortcircuit_eng_launcher.html

Prefix, Root, and Suffix Practice
http://www.quia.com/cm/17271.html

-os and -oes Plurals
http://www.manythings.org/wbg/irr-plurals2-jw.html

Roots and Prefixes
http://www.quia.com/jg/66094.html