The invention relates to a teaching aid. The teaching aid comprises lamp light boards, a controller, a transparent panel, transparent insertion boards, fluorescent boards, panel insertion slots, insertion board seat insertion slots and transparent drawing boards; the lamp light board body is divided into a lamp light board outer board body and a lamp light board inner board body; the lamp light board outer board body is connected with the lamp light board inner board body through a buckling device; the outer side of the lamp light board outer board body is provided with the controller; the inner side of the lamp light board outer board body is provided with a circuit board, a lithium battery and a power source plug; the inner side of the lamp light board inner board body is provided with an LED light bar and a power source socket; and the outer side of the lamp light board inner board body is provided with the fluorescent board, the panel insertion slot and the insertion board seat insertion slot. According to the teaching aid of the invention, the transparent drawing boards are adopted as photoprinting boards to collect outline lines on a geographical image, so that the teaching aid can be made accordingly; the LED light bars are used as the lamp light boards; and acrylic boards are adopted to make light emitting bodies; and the plurality of transparent drawing boards are combined. The teaching aid has the advantages of perspectivity, dynamic performance, intuitive teaching in geographical evolution and multidisciplinary application.