a PLAYCHEM experiment
There is a... VIDEO
There is a mystery in the laboratory! A horrible deed has been committed
and the police are investigating. The only clues are a piece of paper with a spot of black
ink on it and four black felt pens. Can you help the police solve the case?
You'll need some toilet paper and a paper cup.
The experiment will give you a few more suggestions but meanwhile ..... Goodbye
© RWK 1/12/2000