Splitting Method for Linear Complementarity Problems

A teaching toy has a stop action feature which allows operators of the toy to momentarily stop the action of the toy in order for one of the operators to make a guess as to a question which is being asked by the toy. The teaching toy includes a housing with at least two operator interface members located on the housing. A control mechanism is located in the housing in association with each of the operator interface members. Each of the operator interface members are capable of independently interacting with the control mechanism such that as soon as a first of the operator interface members interacts with the control mechanism, further interaction with subsequent operator interface members is prevented. Interaction of one of the operator interface members with the control mechanism controls the output of an output mechanism which displays a card or the like utilized in a learning process. A reset mechanism is associated with the control mechanism for resetting the control mechanism after interaction with one of the operator interface members.