LAP JOINT TYPE QUESTION BOARD

摘要

PROBLEM TO BE SOLVED: To make a teaching effect higher by speedily displaying more questions with characters unified with a suitable size on a blackboard, making it possible to form the questions of the number larger than the number of prepd. boards, drawing attention by the replaced characters or the action thereof and forming the boards designing the matters desired to be taught at the point. ;SOLUTION: The question board 2 attached with a magnet 1 on its rear surface is first formed. Next, the replacement board 3 displaying part, etc., of the questions or the items, symbols, etc., relating thereto is prepd. A plurality of the other replacement boards having the display resembling the display of the replacement board are formed. Similarly the question board 2 displaying the question having the meaning different from the meaning of the question described above is formed and the replacement boards 3 relating thereto are formed.;COPYRIGHT: (C)1999,JPO