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Education.com: Lesson Plan: More Than One: Irregular Plural Nouns
[Free Registration/Login Required] Irregular plural nouns are introduced in this multisensory lesson plan. Supplementary posters, a video, and practice pages accompany the instructional activity.
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K12 Reader: Reading Instruction Rsources: Irregular Plural Nouns
Designed for second and third graders, this resource from K!2 Reader includes the definition of "irregular plural nouns," examples of irregular plural nouns, and a instructional activity.