Teachers And Parents, This Book Is An Outstanding Teaching Resource, Much More Than The Title Might Suggest. Beginning With: A Lifetime For A Mayfly Is About One Day, It Presents 24 Lifetimes Such As That Of An Earthworm (About Six Years), A Giant Sequoia (About 2,000 Years), A Bacteria (Well, That Depends), A Dinosaur (Never Again) And The Universe (About 15 To 20 Billion Years). Each Example Comes With Detailed Illustrations And Something To Ponder, Such As, For Earthworms: Worms Teach Us That Our Work Can Be Very Important, Even If It Cannot Be Seen. Each Plant Or Animal Is Practically A Lesson Plan In Itself, With Tell About It, Think About It, And Look It Up Challenges. Written By A Retired Teacher, This Is A Favorite Book For Children And Teachers Alike. A 48-Page Teachers Guide Based On The Book Is Available (Sold Separately).