Create a series of equations to produce each number from 0 to 20, using just '4 Fours' in each equation, along with basic math symbols. Don't forget the standard order of operations, as you'll need to ...

Michelle Chin is an Austin-based influencer known as the "human calculator," and on Dec. 14, she'll teach a free online class called "Math Magic." The room was silent except for the scribbling of ...