From at least the nineteenth century, educators have thought that playing with specially designed blocks would give children a tangible sense of mathematical relationships. The San Diego, California, ...

International tests scores released this month provide further evidence that U.S. students are behind where they should be in math, a problem that has huge implications for their success in school and ...

ATLANTA — Students gathered around a bright blue number board in Melissa Williams’ kindergarten class at the Westminster School, gazing at the bank of 100 blank squares, organized in rows and columns ...