01
![U3L3_Engage.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt2236bcee442de796/62b05e3ff4da744f1d8c954c/U3L3_Engage.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Maria sees that African buffalo live in large herds. She wonders why they live in groups rather than on their own.
02
![Explore_Maria.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt163d17de79c91d46/62710f096ed4423afc98da79/Explore_Maria.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
What are some animals that live in herds?
03
![Explore_Maria.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt163d17de79c91d46/62710f096ed4423afc98da79/Explore_Maria.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
How does living in a herd help these animals survive?
How does it help them stay safe?
04
![45345_Science_U3_L4_App_Overlay.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt8170e0a2b355aa04/62b05dd3f4da744f1d8c9548/45345_Science_U3_L4_App_Overlay.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Build an African buffalo.
Put a colour sensor on its head.
05
![45345_Science_U3_L4_App_Overlay.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt8170e0a2b355aa04/62b05dd3f4da744f1d8c9548/45345_Science_U3_L4_App_Overlay.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Point the sensor down.
That is where the buffalo’s food is.
06
Use a LEGO® piece as a predator.
Make it yellow.
Program your buffalo.
Have it make a sound when it sees a predator.
07
![Explain_Maria.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt11a8cb2ae0506666/62710efebae21939d5444d60/Explain_Maria.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Use your model to explain:
How can the buffalo notice a predator.
08
![Explain_Maria.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt11a8cb2ae0506666/62710efebae21939d5444d60/Explain_Maria.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Use your model to explain:
Why might an animal eating grass not see danger until it is near?
09
![Elaborate_Sofie-Maria.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt76483a5895e7da2c/629470a5df98c90faab8746c/Elaborate_Sofie-Maria.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Change your model.
This time, point the colour sensor forward.
10
![Elaborate_Sofie-Maria.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt76483a5895e7da2c/629470a5df98c90faab8746c/Elaborate_Sofie-Maria.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Show how your buffalo can see a predator.
How is this different than your first model?
11
![Elaborate_Sofie-Maria.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt76483a5895e7da2c/629470a5df98c90faab8746c/Elaborate_Sofie-Maria.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
How can having some animals watch help the herd?
12
![GslastEssentialMinifig.518563b8.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt8a54880687149983/62710efefbd1dd35f419cee2/GslastEssentialMinifig.518563b8.png?locale=en-gb&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Great job!