NASA
Is It Alive?
Determining whether or not something is living can be more difficult than it seems. Put your young scientists to work defining their own criteria to identify life, then work with three samples to see if they are alive or not.
Curated OER
Is It Living?
Students investigate the definition of life and alive in the context of a unit that is involved with building their own planet. They participate in a class discussion about defining life, and in small groups analyze artifacts to...