CAN YOU PROGRAM THIS PELICAN CROSSING? 1. Hide the 'green man' to begin with. 2. Make Kerry (wearing purple) walk up to, and press, the 'WAIT' sign and button. 3. After a while, make the lights change to indicate it's safe to cross. 4. When it's safe to cross, make Kerry cross over to her friend, Rhiannon (wearing yellow). 5. Make the lights change back after there has been enough time to cross.
There are many, many different ways of programming this pelican crossing. Once you've found one way of programming it, can you improve your program?
