Dr. Emma Chen, a renowned mathematician, has set the international math community abuzz with her latest numerical sequence puzzle. This challenging brain teaser has stumped even the most brilliant ...

A brain teaser is like a fun little challenge for your mind. It’s a puzzle or riddle which is designed to make you think creatively and critically, often in ways you’re not used to. At first look, a ...

A brain teaser is a short, playful puzzle designed to make your mind stretch and smile. It could be a riddle, a tricky question, a visual illusion, or a logic twist that nudges you to think beyond the ...

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 ...