Monarch Butterfly Life Cycle: What is a Generation?
The monarch butterfly life cycle goes from egg to larva to chrysalis to adult. During the breeding season, this cycle repeats itself over and over. Each complete cycle is called a “generation.”
How Long Are Other Animal Generations?
Four human generations are pictured here. Can you find the child, parent, grandparent and great-grandparent? These familiar names are used when we talk about generations. They describe the relationships between generations.
How long are human generations? Draw your family tree (children, parents, and grandparents is enough). Record the year each person was born in each generation. Next, go back and calculate the age of each person when their first child was born. Finally, calculate the average age at which each generation produced their first child. Back at school, compare the length of generations for the families in your class.
is a characteristic of all living systems; because no individual organism
lives forever, reproduction is essential to the continuation of every
National Math Standards