How Long Do Monarchs Live? Estimating the Lifespan of a Monarch of the Overwintering Generation (Back to Lesson) National Science Education Standards Life Science Plants and animals have life cycles that include being born, developing into adults, reproducing, and eventually dying. The details of this life cycle are different for different organisms. (K-4) National Math Standards Numbers and Operations Understand meanings of operations and how they relate to one another. Understand numbers, ways of representing numbers, relationships among numbers, and number systems. Compute fluently and make reasonable estimates. Problem Solving Solve problems that arise in mathematics and in other contexts.   Copyright 2006 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to our feedback form