Mammal Survival Simulation
Help children understand why small size, adaptability, and flexible diets helped mammals survive after the dinosaurs disappeared.

Materials Needed:

• A variety of small toys or animal figurines (representing different mammals, dinosaurs, and other creatures)
• Paper or sticky notes to label traits (e.g., “Small size,” “Can hide,” “Flexible diet”)
• Timer or dice
• Optional: tray or area with “safe zones” and “danger zones”

Instructions for Parents:

1. Set the scene:Explain that after the asteroid impact 66 million years ago, many dinosaurs died. Mammals that were small, adaptable, or could hide survived and eventually became dominant.
2. Create the “ecosystem”:
   • Place all toys/figurines in the play area.
   • Assign traits to each creature using labels. Examples:
     • Small size → easier to hide
     • Flexible diet → can eat many foods
     • Can hide → safe from predators
     • Large size → hard to hide (like non-avian dinosaurs)
3. Simulate a catastrophe:
   • Parent chooses a random “event” (e.g., asteroid impact, forest fires, sudden food loss).
   • Roll a dice or flip a coin to determine which traits help creatures survive.
   • Remove toys that don’t survive and keep the ones with advantageous traits.
4. Observe the results:
   • Count which creatures survived.
   • Discuss why certain traits helped survival.
5. Repeat rounds:
   • Introduce new “environmental challenges” (cold, drought, new predators).
   • Let kids see how adaptability and small size continue to help mammals thrive.

Parent Talking Points / Connections to the Lesson:

• Level 1: “After the dinosaurs died, small mammals that could hide or eat different foods survived. These traits helped them grow and live in many places.”
• Level 2: “This simulation shows how small size, flexible diets, and adaptability provided mammals with a survival advantage after the K–Pg extinction. These traits allowed mammals to fill empty ecological niches and diversify into the dominant land animals.”

Optional Extensions:

• Draw a survival chart: Kids can chart which traits helped mammals survive and which traits caused extinction.
• Connect to fossils: Show pictures of early mammal fossils and ask kids to imagine how these traits helped them survive.
• Link to humans: Discuss how these survival advantages eventually led to mammals evolving into species like humans.