(Step 5) Making your Moving Part

"We had a problem making the moving part, and deciding 
what it was going to be.  

The way we solved the moving part thing was Karen let me 
and Samnang play with some motor and batteries until we 
decided what we wanted.  

Our moving part is two big batteries and a motor.  
Here's how it works: the motor has a stick looking thing.  
On top of that is a piece of white cardboard.  The motor 
is hooked up to the battery and a switch.  When you flick 
the switch the motor turns, that makes the blue straw 
turn, and when the blue straw turns the cardboard turns.  
That makes it hard to get the marble by it.  When you 
manage to get past the moving part then there's the cat 
with its mouth open." -Chiquita