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On a recent Friday morning, I was on the floor of the West Oakland BART Station, worming my way past new — and supposedly impenetrable — fare gates. But at what cost? BART plans to spend $90 million ...

When parents ask how to get the benefits of manipulatives like base 10 blocks in distance learning, teachers can share strategies for using common household items. Math manipulatives, as teachers know ...

Multiply periodic states appear in a wide variety of physical contexts, such as the Rayleigh–Bénard convection, Faraday waves, liquid crystals and skyrmion crystals recently observed in chiral magnets ...

In the Oct. 2014 Pit Stop, you explained why horsepower and torque always cross at 5,252 rpm. And in the past you've published formulas for the relationship between miles per hour (mph), axle ratio, ...