Did you follow the news this week? Take our quiz to see how well you stack up with other Times readers. The U.S. and Israel killed Iran’s supreme leader, Ayatollah Ali Khamenei, who had ruled the ...

Did you follow the news this week? Take our quiz to see how well you stack up with other Times readers. The U.S. military has moved dozens of fighter jets and two aircraft carrier strike groups into ...

Working memory is critical for tackling difficult math problems, but it is finite and can be overburdened quickly, making it hard for students to parse out details and steps when working through ...