Newton's Cradle (TEDCO)

No doubt you've seen one before...the question is: have you owned one for yourself? First invented in the 1960's, the Newton's Cradle became a popular "executive toy" in the 1970s (something for important executives to fiddle with while they're on the phone).  What's the proper way to use it you ask?  Our answer:  any way you like!  You can try it pulling 1, 2, 3 or 4 balls at a time...our favourite is 2, but why not find out your favourite for yourself?