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These specially designed playing cards make
it easy to measure near visual acuity in young
children, while teaching concepts of similar/
different, big/small, bigger/smaller. The 4
packs contain 16 cards each with symbols of
varying sizes: 16M and 10M, 6.3M and 4M,
2.5M and 1.6M, and 1M and 0.63M. Includes
training cards and instructions. The paper
cards measure 1.6″ x 2.75″ (4 cm x 7 cm).
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