Children who count on their fingers between ages 4 and 6.5 have better addition skills by age 7 than those who don't use ...
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Kids who count on their fingers between 4 and 6 years old have better addition skills by 7 than those who don’t use their ...
Children who count on their fingers between ages 4 and 6 1/2 have better addition skills by age 7 than those who don't use ...