Quick: How many people did you see on the way home from work the other day? Was it more or less than the day before? Regardless of your answer, it's likely you can't explain what led you to it. Number ...

Making a sensible guess or a rough calculation is known as estimation. An estimate is not an exact calculation. You can use estimation when you do not need to know an exact number or you can use it to ...

Math researchers discovered new evidence about math learning disabilities. Researchers funded by the National Institutes of Health have discovered that the innate ability to estimate quantities is ...

Preschool children who showed less ability to estimate the number of objects in a group were 2.4 times more likely to have a later mathematical learning disability than other young people, according ...

“It’s about being able to step back and look at your result. Does it make sense?” says Stefan Funk, a particle physicist who ...