Add Yahoo as a preferred source to see more of our stories on Google. Being better at math increases income but also ties satisfaction more closely to money. Jonathan Kitchen/Digital Vision via Getty ...

The United States has the highest income gap in the developed world, and it's affecting how kids do in school, new research suggests. A new study reports that 10-year-olds' scores on standardized math ...

Your grade school math teacher probably told you that being good at math would be very important to your grownup self. But maybe the younger you didn't believe that at the time. A lot of research, ...