| 摘要 |
<p>A block type paired teaching aid for answering is provided, and comprises a base plate (1). A paired plate (2) is provided on the surface of the base plate (1), and at least two through holes (3) having the same shape and size are provided on the upper surface of the paired plate (2). At least a paired block (4) is provided, whose shape and size correspond to those of the through holes (3). Each paired block (4) may be placed on the through hole (3) of an arbitrary check, and a slot is provided between the paired plate (2) and the base plate (1).</p> |
