Grade 5 medium sheet 4 deepens plural practice with irregular and tricky forms like wolves, geese, heroes, and women. Students work through nine fill-in-the-blank sentences and a four-pair matching activity that mixes -es, vowel-change, and f-to-ves rules. This Grade 5 worksheet pushes spellers beyond the basic add-s rule and helps them remember the irregular plurals that appear most often in Grade 5 reading and writing tasks.