Nancy shows how to arrange simple half-square triangles into beautiful row-by-row designs. Nancy explains how to arrange simple half-square triangles into beautiful row-by-row designs. Learn how to ...

As witnesses got up to testify to the Ohio legislature, it became clear there would be no consensus on Common Core math. Opponents to the new learning standards said they were developmentally ...

For over a century, a simple yet tricky math problem had continued to baffle experts. Mathematicians struggled to find the fewest number of pieces needed to cut an equilateral triangle and rearrange ...