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 ...

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 ...

Math scores in the U.S. have been so bad for so long that teachers could be forgiven for trying anything to improve them.

Words matter. And when it comes to learning math, they matter more than you might think.

To be sure, there are many reasons that American schools are failing to teach math: an aversion to standardized tests, powerful teachers unions, chronic absenteeism and grade inflation, to name a few.

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