| 摘要 |
A multisensory learning aid device comprising a series of three-dimensional blocks representing the numerals one through nine and zero, each block having a compartment therein for each combination of numbers that may be added to arrive at the numeral represented by the block, each compartment having a pair of rows of recesses therein with the number of recesses in each row corresponding to the numbers which may be added to arrive at the numeral represented by the block, an article removably positioned in each recess with all of the articles in each block being of the same color and significance but being of a different color and significance from all of the articles in each other block, and closure means for each compartment.
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