Leo is sleepy. It is time to go to bed.

But Leo is curious. He wants to see all the creatures that walk past his campsite at night.

Build an animal alarm. It will switch on when a blue creature walks past the Colour Sensor.

Here is your challenge. Make the program. It switches the alarm on when a blue creature walks past the Colour Sensor.

Make the program. It makes the alarm switch on when a blue creature walks past the Colour Sensor.

Try your program.

Change your program to react when a red creature walks past.