Students in Melissa Williams' kindergarten class at the Westminster School in Atlanta, Georgia, practice connecting quantities to written numbers — a key part of number sense. Credit: Holly Korbey for ...

Brian Butterworth is on a crusade to understand the number deficit called dyscalculia — and to help those who have it. In the mid-1980s, Paul Moorcraft, then a war correspondent, journeyed with a film ...

Scientists are studying how human adults and infants, lemurs, and monkeys think about numbers without using language. One researcher is looking for the brain systems that support number sense and ...

Imagine hosting a party. You arrange snacks, curate a playlist and place a variety of beers in the refrigerator. Your first guest shows up, adding a six-pack before taking one bottle for himself. You ...