Maria sees that African buffalo live in large herds. She wonders why they live in groups rather than on their own.

What are some animals that live in herds?

How does living in a herd help these animals survive?
How does it help them stay safe?

Build an African buffalo.
Put a colour sensor on its head.

Point the sensor down.
That is where the buffalo’s food is.

Use a LEGO^® piece as a predator.
Make it yellow.
Program your buffalo.
Have it make a sound when it sees a predator.

Use your model to explain:
How can the buffalo notice a predator.

Use your model to explain:
Why might an animal eating grass not see danger until it is near?

Change your model.
This time, point the colour sensor forward.

Show how your buffalo can see a predator.
How is this different than your first model?

How can having some animals watch help the herd?

Great job!