What is the Physical Principle underlying the toy?
Introduce the concept of center of mass to the child
What age grou pis the tou designed for?
Age 6 and above
How does the toy work/ how does the child play with the toy?
The goal of the game is to make the 7 balls (actaully in different colors) fit in to the hole with the same color. (Well, I don't know how to program this on IronCAD.) Just keep rolling until you make them all in the right hole.
