| 摘要 |
A base member has an electrically conductive layer thereon. An electrical power source and indicator device, such as a lamp, buzzer, etc. are electrically connected to the conductive layer. A metallic clip is provided on the base member, also electrically connected to the power source, and spaced from the conductive layer. A question and answer member is mounted on the base member with the clip in electrical connection with a second conductive layer which is part of the question and answer member. The question and answer member has a control opening in registration with a correct answer indicia whereby finger pressure on the correct answer indicia causes an electrical connection to be made between the second conductive layer of the question and answer member and the conductive layer on the base member to complete the electrical circuit to the indicator device. The question and answer member may be an integral or laminated layered structure.
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