Information about "urns"

Urns are container in which you fill elements and whose content you cannot see while drawing elements from it. You take a “blind choice”. The different types of urns differ concerning their filling; some of the urns are adjustable, some are not.

When the mouse is located on an urn of the index card a catchword appears that explains the specific urn.
There is either a name for example „dice“, „lottery urn“, „calendar“, “coin“ or a description of the content of the urn for example „holds coloured balls“.

Urns have to be connected with a drawing node.
Use the draw with put back or the draw without put back edge .

The toolbox provides
- a lottery urn
- a calendar urn
- a urn filled with coloured balls
- a tetrahedron
- a die
- a coin
- an adjustable urn
- a complex adjustable urn.

Possible successors: simple drawing node, multiple drawing node