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Head-scratching grade school math sum divides people... can you remember the golden rule?

A grade-school math problem has left people perplexed, can you solve the simple-looking equation in just 30 seconds? The sum, ...
The Hill

Making the Grade: Solving the U.S. Math Problem

Many states have laws aimed at improving literacy, but few are putting the same weight behind targeting math instruction. A recent study by NWEA found that middle and elementary school students’ math ...