A teaching and learning game comprising a base plate with a pattern of regularly spaced square projections to which can be attached various information-carrying plug-in blocks which have a matching square recess. The plug-in blocks are of transparent plastic and carry the printed information on an inexpensive carrier under the cover part of the composite plug-in block. The latter may be openable for replacement of the information-carrier. Basic plug-in blocks may have a recess the size of a single projection and carry just one letter or number, or they may fit over several adjacent projections carrying an entire word or an image.
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